Java – Break Statement
When the condition is fulfilled, the break statement in Java is used to exit the programme from the loop containing it.
If the break statement is used in a nested loop (loop inside the loop), the innermost loop will be terminated once the break requirements are met.
Break statement with While loop
If the value of variable j becomes 4, the break statement is used to exit the while loop in the example below.
public class MyClass {
public static void main(String[] args) {
int j = 0;
while (j < 10){
j++;
if(j == 4){
System.out.println("Getting out of the loop.");
break;
}
System.out.println(j);
}
}
}
The output of the above code will be:
1 2 3 Getting out of the loop.
Break statement with For loop
If the value of the variable i become 4, the break statement is used to exit the for a loop.
public class MyClass
{
public static void main(String[] args)
{
for (int i = 1; i <= 6; i++)
{
if(i == 4)
{
System.out.println("Getting out of the loop.");
break;
}
System.out.println(i);
}
}
}
The output of the above code will be:
1 2 3 Getting out of the loop.
Break statement with Nested loop
When the condition is met, the Break statement ends the inner loop. In the example below, the inner loop is only terminated when j = 100, causing the programme to bypass the inner loop for j = 100 and 1000.
//Nested loop without break statement
public class MyClass {
public static void main(String[] args) {
System.out.println("# Nested loop without break statement");
for (int i = 1; i <= 3; i++){
for (int j = 10; j <= 1000; j = j * 10){
System.out.println(i*j);
}
}
}
}
The output of the above code will be:
# Nested loop without break statement 10 100 1000 20 200 2000 30 300 3000
//Nested loop with break statement
public class MyClass {
public static void main(String[] args) {
System.out.println("# Nested loop with break statement");
for (int i = 1; i <= 3; i++){
for (int j = 10; j <= 1000; j = j * 10){
if(j == 100 ){
break;
}
System.out.println(i*j);
}
}
}
}
The output of the above code will be:
# Nested loop with break statement 10 20 30