Java for Smart Business Solution - A Language to Survive Long

Java is extensively used in a wide range of platforms, starting from various embedded devices and mobile devices to different enterprise servers as well as supercomputers. Such has been the impact of Java on the fraternity of development that when it comes to providing smart as well a long term business solution, the language has become almost an obvious choice. This is mainly because of the features that the language comes up with. Experts are of the belief that much due to these unique features, Java will survive for long. Let us look into some of the features that have made the language an indisputably dominant force in the world of development.

Why Do Employers Search For Java Developers More Than Anything Else?

There is no doubt that Java today is one of the most popular as well as sought after software systems. Such has been the popularity of Java developers who have mastered Java skills that companies nowadays can go to any extent to hire a certified Java developer. Java has gone paces ahead of other languages in terms of demand.

The rise in this popularity can be attributed to the value added features that have made Java so popular.

Hibernate in Java - What Should Developers Know?

As the name suggests, Hibernate Object-Relational Mapping or ORM is an object-relational mapping library that is used in Java. The library provides a framework that helps in mapping object-oriented models of domains. The main objective of Hibernate is to solve the object-oriented impedance issues through the process of replacing the direct persistence-related accesses of database with functions that are involved in high-end object handling.

The primary feature that Hibernate comes up with is a unique mapping ability from various classes that are used in Java to the database tables and the same from Java data types to the SQL data types. The library also provides a string of retrieval facilities as well as a high end data query that facilitates handling the backend features. It also generates SQL calls, while making the lives of the developers easier, by automating set handling as well as object conversion. Besides, applications that use Hibernate also support SQL database with hardly any performance overhead.

Java Strings - Few things that Java Programmer Should Know

A Java class that is very widely used is known as string. It is considered quite special since compared to a normal class it contains some unique, special characteristics. It consists of some characters in a sequence; through the class the object can be created. There are many concepts which can be carried on through this and are worth knowing by most Java programmers.

Creation of objects or instantiation- The object can be created in two different ways- through new keywords and through string literal. Through double quote a string literal can be created. With its creation each time, the constant pool is checked by JVM first. If the pool already has the string then it returns the pooled instance’s reference. If the pool does not contain it then a new object is instantiated which is then placed there. Memory efficiency is increased by this. Through keywords, the object is created in a straight-forward manner by JVM.

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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