JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Java For Loop


The for statement or for loop provides a way to iterate over a range or list of values. Using for loop you can repeatedly loops until a particular condition is satisfied. The general form of the for statement can be expressed as follows:

for (initialization; condition for terminating loop;increment) {
       statement(s)
}

In the above statement, initialization expression initializes the loop; it is executed only once, as the loop begins.

When the termination condition returns false, then the loop terminates.

The increment expression is invoked after each iteration through the loop. Here you can either increment or decrement a value.

Here is a simple for loop example to display numbers from 1 to 10.

package com.java2novice.loops;

public class SimpleForLoop {

	public static void main(String a[]){
		//simple for loop to print from 1 to 10
		/**
		 * here int i=1; means at the beginning of the
		 * loop, we are creating and initializing the variable 
		 * to value 1.
		 * 
		 * 1<=10; means when i value reaches or above 10, the 
		 * control should come out of the loop.
		 * 
		 * i++ means on each iteration, we are incrementing 
		 * i value by step 1.
		 */
		for(int i=1;i<=10;i++){
			System.out.print(i+" ");
		}
		System.out.println();
		/**
		 * another example to increment by 2 steps
		 */
		for(int i=1;i<=10;i=i+2){
			System.out.print(i+" ");
		}
		System.out.println();
		/**
		 * Below loop prints the numbers in reverse order
		 */
		for(int i=10;i>0;i--){
			System.out.print(i+" ");
		}
		System.out.println();
	}
}

Output:
1 2 3 4 5 6 7 8 9 10 
1 3 5 7 9 
10 9 8 7 6 5 4 3 2 1 
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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
Knowledge Centre
Interface and its usage
Interface is similar to a class which may contain method's signature only but not bodies and it is a formal set of method and constant declarations that must be defined by the class that implements it. Interfaces are useful for declaring methods that one or more classes are expected to implement, capturing similarities between unrelated classes without forcing a class relationship and determining an object's programming interface without revealing the actual body of the class.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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