Java2007-09-08
isAlive() and join() in Java
The main thread must be the last thread to finish. Sometimes this is accomplished by calling sleep() within main(), with a long enough delay to ensure that all child threads termin
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Java2007-09-08
A simple Thread sample in Java
The easiest way to create a thread is to create a class that implements the Runnable interface. The second way to create a thread is to create a new class that extends Thread, and
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How to use 'implements Runnable' in Java
The easiest way to create a thread is to create a class that implements the Runnable interface. Runnable abstracts a unit of executable code. You can construct a thread on any obje
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The Main Thread in Java
When a Java program starts up, one thread begins running immediately. This is usually called the main thread of your program, because it is the one that is executed when your progr
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What is Multithreaded programming?
Unlike most other computer languages, Java provides built-in support for multithreaded programming. A multithreaded program contains two or more parts that can run concurrently. Ea
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Use of 'finally' in Java
When exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it i
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Java2007-09-08
Use of 'throws' in Java
If a method is capable of causing an exception that it does not handle, it must specify this behavior so that callers of the method can guard themselves against that exception. You
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Use of 'throw' in Java
It is possible for your program to throw an exception explicitly, using the throw statement. The general form of throw is shown here:
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Use of try and catch in Java
Although the default exception handler provided by the Java run-time system is useful for debugging, you will usually want to handle an exception yourself. Doing so provides two be
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Basics of Exception Handling in Java
A Java exception is an object that describes an exceptional (that is, error) condition that has occurred in a piece of code. When an exceptional condition arises, an object represe
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A Tutorial on importing packages in Java
Given that packages exist and are a good mechanism for compartmentalizing diverse classes from each other, it is easy to see why all of the built-in Java classes are stored in pack
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What is a Java CLASSPATH and why you need it?
While Java packages solve many problems from an access control and name-space-collision perspective, they cause some curious difficulties when you compile and run programs. This is
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