In this post, I am going to explain how to break the outer loop in Java.
Approach 1: Using labelled break statement.
labelled break
label is a group of statements, identified by using labelname.
Syntax
labelName: {
statement 1
statement 2
…....
statement N
}
Syntax to break the label
break labelName;
BreakOuterLoopDemo1.java
package com.sample.app.loops;
public class BreakOuterLoopDemo1 {
public static void main(String[] args) {
outerLoop:
for (int i = 1; i < 10; i++) {
for (int j = 1; j < 10; j++) {
if (i * j > 5) {
System.out.println("Breaking outer loop");
break outerLoop;
} else {
System.out.println("(" + i + "," + j + ")");
}
}
System.out.println("Inner loop executed....");
}
}
}
Output
(1,1) (1,2) (1,3) (1,4) (1,5) Breaking outer loop
Approach 2: Keep the looping logic in a different method, and return from the method, when you meet the criteria.
BreakOuterLoopDemo2.java
package com.sample.app.loops;
public class BreakOuterLoopDemo2 {
public static void doSomeLogic() {
for (int i = 1; i < 10; i++) {
for (int j = 1; j < 10; j++) {
if (i * j > 5) {
System.out.println("Breaking outer loop");
return;
} else {
System.out.println("(" + i + "," + j + ")");
}
}
System.out.println("Inner loop executed....");
}
}
public static void main(String[] args) {
doSomeLogic();
}
}
Output
(1,1) (1,2) (1,3) (1,4) (1,5) Breaking outer loop
Approach 3: With the help of a Boolean flag.
BreakOuterLoopDemo3.java
package com.sample.app.loops;
public class BreakOuterLoopDemo3 {
public static void main(String[] args) {
boolean flag = true;
for (int i = 1; (i < 10 && flag); i++) {
for (int j = 1; (j < 10 && flag); j++) {
if (i * j > 5) {
System.out.println("Breaking outer loop");
flag = false;
} else {
System.out.println("(" + i + "," + j + ")");
}
}
System.out.println("Inner loop executed....");
}
}
}
Output
(1,1) (1,2) (1,3) (1,4) (1,5) Breaking outer loop Inner loop executed....
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