Java For Loop Example

Hey guys!! Today you will learn java for loop example and its types.

java For loop

For loop is used to repeat statements although the given condition is true. Condition is tested before executing the statements. For loop is better used in programming if the number of iterations is fixed.

java For loop Syntax:

for (initialization; termination; increment) {
statement(s).....
}

JAVA For loop flow diagram:

Remember following points before using for loop

• Loop begins with an initialization expression which initializes the loop, and is executed only once.
• Loop terminates if the termination expression evaluates to false.
• After each iteration through the loop, increment expression is invoked.

JAVA For Loop Example:

public class For_Loop {

public static void main(String[] args) {

for(int x = 1;x <= 5;x++){
System.out.println(x);
}
}
}

Output:

1
2
3
4
5

Also Read – Do While Loop Java

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Java enhanced for loop or for-each loop

Now, we will learn the concept of enhanced for loop or for-each loop. For-each loop is designed to iterate through arrays and collections. This loop is very compact and easy to read since we do not need increment value and subscript notation.

For Loop Syntax:

for(Type var:array){
// code goes here
}

For Loop Example:

public class EnhancedForLoop {

public static void main(String[] args) {

int[] numb = {2,4,6,8,10};

for (int even : numb) {

System.out.println("Even Number: " + even);

}
}
}

Output:

Even Number: 2
Even Number: 4
Even Number: 6
Even Number: 8
Even Number: 10

Also Read – Java If Else

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Infinite For loop

For loop can be an infinite loop since the three expressions namely initialization, termination and increment are optional.

Infinite Loop Syntax:

for ( ; ; ) {
// code goes here
}

Infinite Loop Example:

public class InfiniteForLoop {

public static void main(String[] args) {

for( ; ; ){
System.out.println("Infinite for loop");
}
}
}

Output:

Infinite for loop
Infinite for loop
Infinite for loop
Infinite for loop
Infinite for loop……………. goes on