Loop control structure in java.■ for loop.■ while loop.■ do-while loop.

■》Loops->

A loop is used for executing a block of statements repeatedly until a particular condition is satisfied. A loop consists of an initialization statement, a test condition and an increment/decrement  statement.

1● For Loop->

The syntax of the for loop is ->

for (initialization; condition; update) {

 // body of-loop

}

■》Example->

for (int i=1; i<=20; i++) {

   System.out.println(i);

}

2● While Loop->

The syntax for while loop is :

initialization;

while(condition) {

 // body of the loop

 update;

}

■》Example->

int i = 0;

while(i<=20) {

   System.out.println(i);

   i++;

}

3● Do-While Loop->

The syntax for the do-while loop is :

initialization;

do {

 // body of loop;

 update;

}

while (condition);

■》Example->

int i = 0;

do {

   System.out.println(i);

   i++;

} while(i<=20);