3.13. The while statement
Last updated: 23 January 2013.
The while statement allows you to repeat the execution of the same statements as long as a certain condition evaluates to true. Here is the syntax of the while statement:
while (<condition>) {
// the statements that are to be executed repeatedly go here
}
// the statements that are to be executed repeatedly go here
}
condition is an expression that evaluates to true or false. In the example shown below, the method whileLoop prints the positive integers under 10 to the standard output:
public class JavaLoops {
public void whileLoop(){
final int MAX_VALUE = 10;
int i = 0;
while( i < MAX_VALUE){
System.out.println(i);
++i;
}
}
}
public void whileLoop(){
final int MAX_VALUE = 10;
int i = 0;
while( i < MAX_VALUE){
System.out.println(i);
++i;
}
}
}
Create a class named App and call the method whileLoop:
public class App {
public static void main(String[] args) {
new JavaLoops().whileLoop();
}
}
public static void main(String[] args) {
new JavaLoops().whileLoop();
}
}
The output is:
0
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
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