A Guide to Efficient and Faster Java debugging

Debugging is one skill that every java developer must possess. The reason behind such a crucial need is simple; the skill helps you to discover delicate bugs, which otherwise becomes invisible during the time of reviewing the code. The debugging skill becomes even more essential if your work tends to revolve around electronic trading system or high frequency project where the fixing time of a bug tends to be very low. Moreover, the bug tends to appear on production environment and be invisible in a machine featuring windows XP.

In some cases, it also helps understanding the flow of the java program. Now, when it comes to debugging, tools like Netbeans and Eclipse IDE come of great help. These tools are known to offer several breakpoints through the process and provide a great support to Java debugging. To start the complete process of debugging, all you need to do is configure the project in a modern IDE like Netbeans or Eclipse. Usually, Eclipse tends to offer better debugging opportunities as it allows an effortless integration with remote debugging.

Top Java Debugging Tips

Here is a quick look at some of the top and essential debugging tips using Eclipse that is sure to help you in java web development:

1. Make use of conditional breakpoint: Eclipse enables you to establish a conditional breakpoint, which allows you to debug a particular java program. The particular idea refers to a call for a breakpoint under condition wherein your thread will only discontinue at a particular line, provided the condition tends to match, as against stopping anywhere on that particular line due to line breakpoint. To establish the feature of conditional breakpoint, all you need to do is click twice on the particular line of breakpoint followed by a right click to properties and insertion of the condition. The program will only discontinue temporarily at the breakpoint without any hitch.

2. Make use of exception breakpoint: It is likely for you to experience bouts of frustration with the NullPointerException clueless about the source of origin. Exception breakpoint is precisely established to fight the odds of such situations. The setup can be easily done from the breakpoint window stopping your program. The Exception breakpoint can be established on exceptions of Java like ArrayIndexOutOfBoundException and NullPointerException.

3. Step Into, Step Over: These are referred to as wonderful options of debugging that are easily available in any kind of Java IDE. This particular approach comes useful in cases you need to debug multi-threaded application and direct a systematic navigation.

4. Incorporating watch point: This particular facility stops a program execution enabling a debug of the same, especially after a selected attribute has been modified or accessed. All you need to do is choose a variable in the Outline view and direct to the toggle Watchpoint from the context menu. This particular approach helps creating a watch point for the particular attribute listing it in Breakpoints view.

5. Make use of inspect and watch: These two options in the menu allow noting the expression value during the debugging process of the Java program. The process involves choosing the statement followed by a right click and navigating towards the inspect option to get the statement value during the time of debugging. You can also consider adding a watch to the process so as to make the value appear at the watch window.

6. Suspend and continue thread: You can suspend any thread and continue with the same again during the debugging process of a java program from the debug window. To make it work, you need to right click on any particular thread and select the choice of resume or suspend. This helps in cases like initiating a debug of multi-threaded program.

7. Make use of logical structure: The option of logical structure comes quite useful for monitoring contents within Java collection classes during the debug process. This help exhibiting the contents in key and hashmap value as against exhibiting complete hashmap details. This can be enabled from the variables window.

8. Incorporate Step filtering: The control of the program tends to transport from one class to the other class and finally end in classes of JDK like String or Sytem, especially when the Step Into is incorporated during the debugging process. Step filtering comes extremely helpful in cases when one needs to stay in an application without navigating into the classes of JDK system. This helps filtering out the class of JDK from Step into. This can be established from the preferences àJavaàDebugàStep filtering followed by easy disabling and enabling from the debug window.

9. Use Copy Stack option: If you wish to copy a particular stack of thread that had hit the breakpoint and has been suspended, the Copy Stack option comes of great help. The process involves right clicking on the particular thread on the window of debug and selecting the option of ‘copy stack’.

Some Important Shortcuts to Java Debugging

• F5 – The key to Step Into, which allows a move to next step.
• F6 – The key to Step Over, which allows a move of the control to the next line.
• F7 – The key to Step Return, which when executed from within a method allows a move of the control to the calling line from the place of origin of the current method.
• F8 – The key to move towards the next breakpoint.

Debugging a java program has become easier and efficient with the introduction of wonderful tools like Netbeans and Eclipse and is definitely worth a try.

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Java - The Reason Behind Its Never Ending Demand

Java is the most heard programming languages since 1995. It was developed by James Gosling at Sun Microsystems which was later promoted by the Oracle company. It has object oriented programming concepts and used in a variety of computing platforms from embedded devices and mobile phones on the low end, to enterprise servers and supercomputers on the high end. Java has reached all kinds of Smartphones, smart applications, enterprise applications. Java is completely platform independent can run on any machine as long as the Java Virtual machine (JVM) is installed in it. But let us understand what makes java application development so popular.

Java is popular and has got a huge fan community because of its exclusive features:

1. Java is portable as Java code can execute on all major platforms. It has three types of portability: source code portability, CPU architecture portability and OS/GUI portability. Running a java program on different machines can require different amounts of work (for example, no work whatsoever, recompiling, or making small changes to the source code). When people refer to Java applications and applets as portable, they usually mean the applications and applets run on different types of machines with no changes. Programs written in Java are converted to byte code compiled into machine code during run time by the Just In Time compiler or JIT. Java runtime is used for Java applications and applets.
2. A series of activities like threading, networking and even graphical features via applets. It has got microcontrollers capable of running a Java program without the presence of an interface.
3. Java deals uniquely with memory management feature. Its garbage collector frees the memory from objects which are not required or which will not be required. In order to check whether an object is required or not its recent references are checked. If the object is not being referenced anymore it frees up the space automatically.
4. It is free, users need not struggle for heavy license each year. Java's API can be easily accessed by developers.
5. Java embraced the concept of exception specifications. It allows you to create modular programs and reusable codes.

Another great benefit of JAVA is that, the ones the program is in writing in java we can run it anywhere means that applications developed through Java are platform independent. JAVA based enterprise applications perform well because of stable JAVA standards help developers to conceive multilevel applications with a component based approach.

It has some advanced unique features with makes it more effective and delivers customized and highly interactive sites. It is obtainable with the very best established of APIs turning it less complicated for Java builders to create application codes no cost of bugs. This is not feasible in another programming language. This facility can make the procedure of application advancement less complicated and much less-pricey.

Java is a great language has some amazing uses that cover a wide industrial spectrum by its expertise. It is fast, powerful and runs on any platform. It became an awesome choice for developer and software vendors to develop high quality complex applications and software. Development of business and enterprise application development was a bit complex at that time but after the arrival of advanced java and J2ee it helped a lot. It helps in developing multitier enterprise applications which makes more demands. Build secure and advanced applications with Java which suits your business needs at its best.

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