JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java Loops

Many times we need to execute a block of code several number of times, and is often referred to as a loop. In this page you can see examples for all loops supported by java.

Java Loop Examples

  1. Java While Loop
  2. Java Do-While Loop
  3. Java For Loop
  4. Java For each Loop
  5. break statement in java
  6. continue statement in java
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What is abstract class or abstract method?
We cannot create instance for an abstract class. We can able to create instance for its subclass only. By specifying abstract keyword just before class, we can make a class as abstract class.

public abstract class MyAbstractClass{

}

Abstract class may or may not contains abstract methods. Abstract method is just method signature, it does not containes any implementation. Its subclass must provide implementation for abstract methods. Abstract methods are looks like as given below:

public abstract int getLength();
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The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge.
-- Daniel J. Boorstin

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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