Does Java support goto?
Java does not support goto, it is reserved as a keyword just in case they wanted to add it to a later version.
- Unlike C/C++, Java does not have goto statement, but java supports label.
- The only place where a label is useful in Java is right before nested loop statements.
- We can specify label name with break to break out a specific outer loop.
- Similarly, label name can be specified with continue.
Using break with label in Java
value of j = 0
Using continue with label in Java
We can also use continue instead of break. See following program for example.
value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0 value of j = 0
Explanation : Since continue statement skips to the next iteration in the loop, it iterates for 10 times as i iterates from 0 to 9. So the outer loop executes for 10 times and the inner for loop executes 1 time in each of the outer loops.
Java does not have a goto statement because it provides a way to branch in an arbitrary and unstructured manner. This usually makes goto-ridden code hard to understand and hard to maintain. It also prohibits certain compiler optimization. There are, however, a few places where the goto is a valuable and legitimate construct for flow control. For example, the goto can be useful when you are exiting from a deeply nested set of loops. To handle such situations, Jave defines an expanded form of the break statement.
The general form of the labelled break statement is:
Before the break This is after the second block
Pass 0: 0 1 2 3 4 5 6 7 8 9 Loops Complete.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.