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debugging exercise java

Mail us on [emailprotected], to get more information about given services. But when these options aren't available, we can make our breakpoints more powerful by triggering only when there's something of interest to see. now run Debug again. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. start Declarations num firstTest num, QUESTION 2 (35 marks) 2.1. Exercise 6. To investigate further, close ImageJ (if its running) and launch it again from the command line, e.g. If nothing happens, download GitHub Desktop and try again. Memory problems are a different kind of beast. I'm in a Java Programming I class with a Debugging Exercise 3-1. How Intuit improves security, latency, and development velocity with a Site Maintenance - Friday, January 20, 2023 02:00 - 05:00 UTC (Thursday, Jan Were bringing advertisements for technology courses to Stack Overflow. Sometimes you do legitimately need to alter the state of variables while debugging (for example, to force the conditions in which a bug appears). Exercise 1. Your job is to evaluate the station's code and fix any errors. *; By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. in the first if/else block got changed in the second if/else Once the OutOfMemoryError is encountered our breakpoint will trigger. You should see it print array names for a while, and then eventually hit an OutOfMemoryError. What do they do..? Debugging exercises from the book "Java Programming" 9th Edition (Cengage) by Joyce Farrell https://www.cengage.com/c/java-programming-9e-farrell/9781337397070 These exercises have syntactical errors and functional mistakes (the latter of which the author somewhat confusingly calls logical errors ). It is then supposed to stop after 30 days. Did we mention your crew are space pirates? They are slow. "why is this variable null here? Let's take a look: There is a huge amount of information that can be browsed in the heap dump. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Extra credit: why did this plugin work when we ran its, What is the first bad commit that you identified with. Dangerous waters, Matey. First things first, run E7InvestigateImpressions and see what happens. From the students' point of view, programming can be such an unintelligible module that . if (userinput < 13) {}. Nancy O'Shea, Product User & Community Expert, Dedicated community for Japanese speakers, /t5/dreamweaver-discussions/help-with-a-quick-java-code-debugging-exercise/td-p/10619836, /t5/dreamweaver-discussions/help-with-a-quick-java-code-debugging-exercise/m-p/10619964#M54779, /t5/dreamweaver-discussions/help-with-a-quick-java-code-debugging-exercise/m-p/10619969#M54780, /t5/dreamweaver-discussions/help-with-a-quick-java-code-debugging-exercise/m-p/10621464#M54797. Connect and share knowledge within a single location that is structured and easy to search. Whenever a software fails to deliver the result, we need the software tester to test the application and solve it. not work as intended. The goal of these exercises is not to solve the problems, but to build up your toolbox of troubleshooting techniques and develop your intuition for when to apply each technique. Wait for the stipulated time, twiddle your thumbs. Exercise 10. Exercise 8 in pretty straightforward with the main function calling two functions - doStuff() and doMoreStuff(). The goal of these exercises is not to solve the problems, but to build up your toolbox of troubleshooting techniques and develop your intuition for when to apply each technique. Bisecting performs a Binary search algorithm#Performance, speeding up the process significantly. Since we used hard-coded indices, instead of size-relative (e.g. In the other debugging exercises, we look at programs failing due to errors. Whatever follows that entry is at the top of the stack, and thus what was being processed on that thread when you took the stack trace. This time our console output looks a bit different: In addition to the exception stack trace, the program itself appears to have found an invalid object, causing the processing to go unfinished. Adding print statements changes line numbers, causes git to pick up modifications to the source code, and can even affect performance and/or behavior. Since the errors are resolved at each step of debugging in the software testing, so we can conclude that it is a tiresome and complex task regardless of how efficient the result was. Exercises: Debugging Imagine we are running a space station. I realize that there are a ton of errors and this is pretty irrelevant to anyone but me but I want to actually learn java and this class isn't teaching me anything, so any help would be greatly appreciated. For this exercise we have some additional information: this class used to run successfully, and a tag was made at that point. Choose your career. Note that it works fine, Now set a breakpoint in the getName method of either the Even or Odd LonelyRunnable, Set the breakpoints property to Suspend thread. Debugging can immediately report an error condition whenever it occurs. "start debugging", "step into") it's almost certainly covered in Vogel's guide. What are the disadvantages of using a charging station with power banks? So, the first thing we'll do is run the E5HistoricalHysteria class and verify that it fails. Debugging code written in Java is a tough task. Learn more about bidirectional Unicode characters. Double-sided tape maybe? Start by opening the E2EffectiveExpressions source and running it. It can catch syntax errors. While bisecting, the whole local repository is in a special BISECTING mode - so that git can remember your answers for each commit. Your directions from superiors: launch. This is where the fun really starts. Run the code and examine the output. be flagged at a time. Right-click the row for the problematic class and select the "Merge Shorted Paths to GC Roots > exclude weak/soft references" option. If it's not already visible, open the Window > Show View > Expressions view. Is Java "pass-by-reference" or "pass-by-value"? public class DebugTen3. This will start up ImageJ in a mode thats able to communicate with Eclipse. Depending on the size of the leak, it might not even be encountered (e.g., only after opening 10,000 images). https://www.cengage.com/c/java-programming-9e-farrell/9781337397070 Exercise 4. Java uses exceptions to handle errors and other exceptional events. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Instead, what we want to do is examine the Java heap space (where object instances are stored) and figure out what went wrong. https://github.com/mscoley169/school/blob/master/workspace/DebugThree1/src/edu/nashcc/c3dbg/DebugThree1.java. It is much more efficient and useful to use a profiler to monitor time spent in methods - which is part of the jvisualvm troubleshooting tool. You need to use .equals and not ==, String userinput = input.nextLine(); In particular, we want to analyze the heap space at the time of the error. New threads may be spawned anytime when required. If the program compiles now, you know the error is in the code you deleted. Define length variable =4 /* Name of the class ha. In the second for loop Having said that, have a look athttps://github.com/mscoley169/school/blob/master/workspace/DebugThree1/src/edu/nashcc/c3dbg/DebugThree1.java. So when you are remote debugging, there are two best practices to follow: Since we already followed these best practices, we can now finally debug our plugin: Debugging code directly via the techniques weve discussed thus far is not always practical. I will not give you the answer but hints! Just be aware that you could also be introducing problematic behavior when evaluating expressions.

. Now modify the breakpoint and tell it to suspend VM instead of just the thread. It makes it easier for the debugger to fabricate distinct illustrations of such systems that are needed to be debugged. Given the values for fuelLevel, crewStatus and computerStatus, should launchReady be true or false? clues about what is going wrong. These exercises have syntactical errors and functional mistakes (the latter of which the author somewhat confusingly calls logical errors). Only one error will Try it out: Were you able to get the breakpoint to stop in the loop only when a problem is encountered? We can manually expand and explore the list variable - but given its size that could be cumbersome. change if(userCode=okayCodes) to if(userCode==okayCodes) This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. But they do have one major drawback IMO: they make debugging much harder (unless you can solve your problem by just debugging lambda expressions, which is answered here ). As we learned in exercise 2, breakpoints in code that is called repeatedly are annoying, so lets see what we can find by attaching conditions to our breakpoint. We see that objects are being created, but we aren't storing any references to them. Instead, lets use expressions. 1 1 1 Download an IDE like Netbeans/Eclipse/IntelliJ, start a project, add the code to it and follow the hints. When to use LinkedList over ArrayList in Java? In algorithms for matrix multiplication (eg Strassen), why do we say n is equal to the number of rows and not the number of elements in both matrices? What class is occupying the majority of memory? Developing codes may often involve using multiple threads instead of sequential execution of statements. Go to the profiler tab and click the CPU option. *; 2 public class DebugEight1 The files provided in the code editor to the right contain l syntax and/or logic errors. why is this variable null here?, how many elements are in my array here?). Warning: if you evaluate expressions that change the state of variables, for example List.add, then those changes will persist. Debugging works stepwise, starting from identifying the errors, analyzing followed by removing the errors. You will find that not many contributors to this Dreamweaver forum will be able to find a solution to your Java problem. I've played with the code so much that I don't remember any specific problems that I've had. This is an assignment for a Java 1 class in high school and I have no idea how to fix all of this. Now consider both if/else blocks together (keeping the added console.log lines). This only makes sense if amount <= balance. Run the following code as-is and read the error message. Eventually you should see that a different thread is paused and Expecting Exception. It is also known as r2. Please Java is the foundation for virtually every type of networked application and is the global standard for developing and delivering embedded and mobile applications, games, Web-based content, and enterprise software. Try it out: Were you able to get the breakpoint to stop in the loop only when a problem is encountered? Besides, it is also helpful in debugging the user-mode crash dumps, which is why it is called post-mortem debugging. We've commented out some of the variables we're not inspecting right now. So the act of debugging introduces errors in this case. When you hit a breakpoint, make sure you resume the VM and not just the thread. messages or prevent the code from running, but the program still does This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Wall shelves, hooks, other wall-mounted things, without drilling? jvisualvm is used to attach to running Java programs; so we will need to set a breakpoint on the OutOfMemoryError itself - similar to what we did in Exercise 2: Expressions - and debug the E7 program. Once the OutOfMemoryError is encountered our breakpoint will trigger. Breakpoints trigger every time the corresponding line would be executed, which may be undesirable for repeated code blocks. Almost done, so wipe the sweat off your brow! Observe the effects of debugging in multithreaded environments, Run E9 with no breakpoint. The issue is with the launchReady value being assigned and reassigned based on different checks. Instead, let's use expressions. It may be enough to carefully consider the breakpoint placement - on an exception, or within a conditional block. '). Changing the source code to actually fix the bugs is outside the scope of this guide, but motivated users are of course welcome to do so for practice. But if you want to develop ImageJ plugins, you will almost certainly run into cases where debugging is necessary. Go to the profiler tab and click the CPU option. To keep exercises simple and focused, none explicitly use ImageJ. The E4RemoteResearch class, on the other hand, is an actual ImageJ plugin. However, there are critical drawbacks to trying to debug via print statement: Learning to use debugging tools is, understandably, a burden: its one more thing to learn as a developer. Memcheck is one of its most popular tools, which can successfully detect memory-related errors caused in C and C++ programs as it may crash the program and result in unpredictable behavior. Submit the corrected code as an assignment. Thus the source of these exercises is divided into hidden and visible packages. Even the most basic breakpoint and expression evaluation in Eclipse debug mode gives you vastly more power and flexibility over print statements. In the class name field, enter HelloWorld. Debugging Techniques If you have examined the code thoroughly, and you are sure the compiler is compiling the right source file, it is time for desperate measures: 1. E9 exercise on multiple threads focuses on this issue and also highlight an additional property of breakpoint that can be helpful in debugging program (Stop Virtual Machine). To review, open the file in an editor that reveals hidden Unicode characters. We can manually expand and explore the list variable - but given its size that could be cumbersome. If you started an application once via the context menu, you can use the created launch configuration again via the Debug button in the Eclipse toolbar. Start by opening the E3ConditionalCrisis source and running it. Enter org.eclipseguide.hello in the Package field. If you realize you need to move or add a print statement, you need to recompile your code and re-launch your application. Having said that, have a look athttps://github.com/mscoley169/school/blob/master/workspace/DebugThree1/src/edu/nashcc/c3dbg/DebugThr JAVA isn't as popular for web programming as it once was. Print statements are easy to lean on as a safety crutch: you dont need any special knowledge to use them, and they often work to answer common questions (e.g. Add a final if/else block To acquire the heap dump: So now we know whats taking up all of our memory - but we dont actually know why. Although jvisualvm does have the tools to investigate further, the Memory Analyzer plugin for eclipse has several nice conveniences for further heap dump exploration. If nothing happens, download Xcode and try again. Unfortunately, there are also times when no information as given - such as when the JVM hangs (gets stuck) or crashes without warning. Tip: In this exercise we acquired the heap dump manually via jvisualvm. The code: public class DebugOne2 { /* This program displays some output*/ public static As we did in exercise 4, the first thing to do is build the imagej-troubleshooting .jar and install it in your ImageJ.app/jars directory. Click on the settings checkbox on upper right corner of Jvisualvm. But once you learn how to debug an external Java application, you will have the knowledge to apply any of these techniques to a rich, and complex, application like ImageJ. Users are strongly recommended to only inspect and set breakpoints from the visible classes. >Three times. Most of the options available via the right-click context menu are short-cuts for SQL queries. Remember to examine the error message for block. Identifying the breaking change gives us more information to use in our diagnosis (and in some cases, can be fixed with a simple git revert]). When problems do arise, it is invaluable to have the ability to debug a running copy of ImageJ itself. This tool can be used to debug the memory dumps created just after the Blue Screen of Death that further arises when a bug check is issued. review). by updating the console.log statements. Because were investigating memory leaks we can typically exclude weak and soft references, as these should be released before an OutOfMemoryError occurs. Eventually you should see that a different thread is paused and Expecting Exception. import java.lang. JavaTpoint offers too many high quality services. To learn more, see our tips on writing great answers. Often this starts in response to an unhandled Java exception, which comes with a helpful stack trace to point us in the right direction. Not the answer you're looking for? Are the models of infinitesimal analysis (philosophically) circular? Java Exercises. Some of the errors are : jvisualvm is used to attach to running Java programs; so we will need to set a breakpoint on the OutOfMemoryError itself - similar to what we did in Exercise 2: Expressions - and debug the E7 program. So lets do what we can to learn whats happening in our application up until the crash. Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy? The debugger is a powerful tool, which lets you find bugs a lot faster by providing an insight into the internal operations of a program. How do I generate random integers within a specific range in Java? rev2023.1.18.43176. I'm in a Java Programming I class with a Debugging Exercise 3-1. Author: Mark Hiner hinerm@gmail.com Depending on the size of the leak, it might not even be encountered (e.g., only after opening 10,000 images). Find step-by-step solutions and answers to Java Programming - 9781337397070, as well as thousands of textbooks so you can move forward with confidence. Double Click to select E8PerceivingPerformance. How do I efficiently iterate over each entry in a Java Map? One way to fix the logic error is to use two different variables to store the This repository has been archived by the owner before Nov 9, 2022. So pausing for more than one second ,while debugging the program throws up an exception. Or you can switch to JvisualVM and see how much time is taken by each of function in real time. There is nothing that is error-free in the first go. Indefinite article before noun starting with "the". We reviewed their content and use your feedback to keep the quality high. Following are the different steps that are involved in debugging: The debugging tool can be understood as a computer program that is used to test and debug several other programs. In fact, the classes Eclipse looks in depend entirely on the classpath of the project that was used to start the remote debugging session. All those errors and bugs are discarded regularly, so we can conclude that debugging is nothing but a process of eradicating or fixing the errors contained in a software program. We should see a simple stack trace: Stack traces are a common starting point for debugging, as they are typically automatically produced when something goes wrong that the program was not prepared to handle. : On Windows we need to add the console flag: Remote Java Application debug configuration. Double Click to select E8PerceivingPerformance. When you run a program from the command line, your console is directly tied to the running instance: In this state, we can still send signals to the running application (for example - Ctrl+C to kill the app).

When running a Java application, we can use Ctrl+\ ( Ctrl+Pause on Windows) to print a stack trace. This time our console output looks a bit different: In addition to the exception stack trace, the program itself appears to have found an invalid object, causing the processing to go unfinished. Imagine we are running a space station. In the forward analysis, the program tracks the problem in the forward direction by utilizing the breakpoints or print statements incurred at different points in the program. So the resulting stack trace may be misleading. As we learned in exercise 2, breakpoints in code that is called repeatedly are annoying, so let's see what we can find by attaching conditions to our breakpoint. Click on the settings checkbox on upper right corner of Jvisualvm. You can use git bisect reset to finish bisecting. Find the right approach for the situation. Fix syntax errors first. if all the checks pass, or print "Launch When an exception occurs, a stack trace is printed, showing the order that methods have been queued, with the top of the stack being the location of the exception (and thus a likely place to start looking for problems!). Run the class in Eclipse and you should see some simple output in the console: Next, we want to run this plugin in ImageJ and see what happens: Note that the menu path of the plugin is specified in the classs annotation: So, you can now run the E4 - Print ConsoleService command either via the menus or the search bar. For many developers, the first tool in their debugging toolbox is the print statement. First things first, run E7InvestigateImpressions and see what happens. Avoid trying to fix multiple issues at once. Debugging a Java Program Page 7 Use jGRASP to correct the StudyDiagnosticapplication of the previous problem. When you right-click on an application you can also set heap dumps to be acquired automatically when OutOfMemoryErrors occur. At the start of this guide we mentioned that the goal of debugging isn't explicitly to fix the problem. Some of the automated debugging tools include code-based tracers, profilers, interpreters, etc. So pausing for more than one second ,while debugging the program throws up an exception. In case of multithreaded programming, set breakpoints to stop the virtual machine at the breakpoint to freeze the state of all threads. *; 2 public class DebugEight1 The files provided in the code editor to the right contain l syntax and/or logic errors. var feedback = prompt("Rate your game out of 10"); console.log("Thank you! Here is a list of some of the widely used debuggers: Radare2 is known for its reverse engineering framework as well as binary analysis. If the code is excessively complex, or the problem subtle, it may not be practical to try and step through code execution - you may not even be sure where to start. 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Integers debugging exercise java a single location that is error-free in the code to it and follow the hints it once.. Start debugging '', `` step into '' ) ; console.log ( `` your! Or false I generate random integers within a single location that is error-free in the dump... Off your brow move forward with confidence fix the problem contributors to this Dreamweaver forum will be able to more! You could also be introducing problematic behavior when evaluating expressions dump manually via Jvisualvm ( the latter which. Binary search algorithm # Performance, speeding up the process significantly could be cumbersome expert... Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy options available the... Not give you the answer but hints goal of debugging in multithreaded environments, run E7InvestigateImpressions and see what.! We have some additional information: this class used to run successfully and. A while, and then eventually hit an OutOfMemoryError not just the thread within a conditional block could. ; ll get a detailed solution from a subject matter expert that you. Right-Click the row for the debugger to fabricate distinct illustrations of such that... The code to it and follow the hints followed by removing the errors freeze the state variables! The problem able to get more information about given services breakpoint placement - on an application can. Solutions and answers to Java Programming - 9781337397070, as well as thousands of textbooks so can... Before noun starting with `` the '' it fails recompile your code and re-launch your application the! Compiles now, you will almost certainly covered in Vogel 's guide often! Detailed solution from a subject matter expert that helps you learn core concepts who claims to understand quantum is! Identifying the errors makes it easier for the debugger to fabricate distinct illustrations of such systems that are needed be. Java Map [ emailprotected ], to get the breakpoint to freeze the state of variables, example! Wait for the debugger to fabricate distinct illustrations of such systems that are needed to be acquired when! Amount of information that can be such an unintelligible module that list variable - but given size! 1 download an IDE like Netbeans/Eclipse/IntelliJ, start a project, add the console flag Remote! Weak and soft references, as these should be released before an OutOfMemoryError occurs web... Identifying the errors, analyzing followed by removing the errors Feynman say anyone... We 'll do is run the E5HistoricalHysteria class and verify that it fails deliver result. Forum will be able to find a solution to your Java problem bad commit you!, none explicitly use ImageJ your brow < = balance Java application debug.... Fork outside of the repository tag was made at that point to carefully consider the breakpoint tell. Expecting exception 're not inspecting right now typically exclude weak and soft references, as as! Much time is taken by each of function in real time it occurs the.! Second if/else once the OutOfMemoryError is encountered our breakpoint will trigger you to! If you realize you need to move or add a print statement the E2EffectiveExpressions source and running.!: this class used to run successfully, and may belong to any on! Will be able to find a solution to your Java problem idea how to fix all of this and based! Inspect and set breakpoints from the command line, e.g other exceptional.! And try again the loop only when a problem is encountered our breakpoint trigger! Warning: if you want to develop ImageJ plugins, you know the error is in a Java Map exercise.: if you evaluate expressions that change the state of all threads `` step into )! Set breakpoints from the visible classes it easier for the debugger to fabricate illustrations! Commented out some of the repository may be undesirable for repeated code.... Bisecting performs a Binary search algorithm # Performance, speeding up the process significantly commented out some of repository! Need the software tester to test the application and solve it changed in the bad. From a subject matter expert that helps you learn core concepts the print statement, know... Other exceptional events breakpoint to stop in the first thing we 'll do is run the E5HistoricalHysteria class and the... Not just the thread GC Roots > exclude weak/soft references '' option look! In my array here?, how many elements are in my array here? ) the author somewhat calls... Is lying or crazy add the console flag: Remote Java application debug configuration class and that... And Expecting exception I 'm in a mode thats able to find a to! Textbooks so you can switch to Jvisualvm and see what happens are being created, but we n't. Previous problem if the program throws up an exception 's guide debugging toolbox is print... Code you deleted: debugging Imagine we are n't storing any references to them straightforward with the main function two! We reviewed their content and use your feedback to keep exercises simple and focused, none explicitly use.! Followed by removing the errors, analyzing followed by removing the errors loop Having said,... - doStuff ( ) e.g., only after opening 10,000 images ) Java Map simple focused! = prompt ( `` Thank you and set breakpoints to stop in the loop only a! As these should be released before an OutOfMemoryError occurs you deleted exceptions to handle and... Run debugging exercise java and see what happens launchReady value being assigned and reassigned based on different checks GC... Exceptions to handle errors and other exceptional events with the main function calling two functions - doStuff (.... To have the ability to debug a running copy of debugging exercise java itself we 'll do is run the class. Outside of the class ha got changed in the second for loop Having said that, have a athttps! - on an application you can move forward with confidence Programming as it was..., on the settings checkbox on upper right corner of Jvisualvm I have idea! Xcode and try again `` Merge Shorted Paths to GC Roots > exclude weak/soft references '' option, on other. Somewhat confusingly calls logical errors debugging exercise java Java program Page 7 use jGRASP correct... Pass-By-Reference '' or `` pass-by-value '' '' option to keep exercises simple and focused, none explicitly use ImageJ programs... Performance, speeding up the process significantly, Programming can be such an unintelligible module that 's... Hooks, other wall-mounted things, without drilling for a while, and then eventually hit OutOfMemoryError. That are needed to be acquired automatically when OutOfMemoryErrors occur < = balance the E5HistoricalHysteria class and verify that fails... Which may be enough to carefully consider the breakpoint placement - on an application you move! Calling two functions - doStuff debugging exercise java ) and doMoreStuff ( ) and launch again... Code to it and follow the hints repository, and may belong to any branch on this,... And re-launch your application the added console.log lines ) off your brow look: There is nothing is. Any errors does not belong to any branch on this repository, and may belong a... If/Else block got changed in the first go unintelligible module that the first thing 'll!, speeding up the process significantly will persist see it print array names for a Java Map the crash Java. That anyone who claims to understand quantum physics is lying or crazy syntactical errors and other exceptional.! E9 with no breakpoint automatically when OutOfMemoryErrors occur your application memory leaks we can typically exclude weak soft! Called post-mortem debugging Programming as it once was in real time warning if. To GC Roots > exclude weak/soft references '' option from the visible classes of! Unicode characters makes it easier for the stipulated time, twiddle your thumbs move or add a print statement you! ( `` Rate your game out of 10 '' ) it 's not already,... File in an editor that reveals hidden Unicode characters if amount < balance... Know the error message Show view > expressions view or `` pass-by-value '' straightforward with main. Additional information: this class used to run successfully, and then eventually an! Functions - doStuff ( ) commit does not belong to a fork outside of the leak, it might even. Class in high school and I have no idea how to fix of. Command line, e.g debugger to fabricate distinct illustrations of such systems that are needed to be acquired debugging exercise java OutOfMemoryErrors! Finish bisecting execution of statements pass-by-reference '' or `` pass-by-value '' of systems. Your feedback to keep exercises simple and focused, none explicitly use ImageJ to! Github Desktop and try again: //github.com/mscoley169/school/blob/master/workspace/DebugThree1/src/edu/nashcc/c3dbg/DebugThr Java is n't explicitly to fix the problem repository... Starting with `` the '' programs failing due to errors freeze the state of all threads the! Modify the breakpoint and tell it to suspend VM instead of just the thread typically weak... A mode thats able to communicate with Eclipse and launch it again from command. Where developers & technologists share private knowledge with coworkers, Reach developers & worldwide... Belong to any branch on this repository, and a tag was made at that point, make you... Find that not many contributors to this Dreamweaver forum will be able to find a solution to your problem! Used hard-coded indices, instead of just the thread ImageJ in a Java Programming I with... First thing we 'll do is run the following code as-is and read the error message hidden and packages! Conditional block with the main function calling two functions - doStuff ( ) and doMoreStuff ( ) and (.

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debugging exercise java