Explain Labeled Loops in details ?

Generally inside nested loops break and continue exit the innermost enclosing loop. For instance consider the subsequent loops.
for (int i=1; i < 10; i++) {
for (int j=1; j < 4; j++) {
if (j == 2) break;
System.out.println(i + ", " + j);
}
}
This code fragment prints
1, 1
2, 1
3, 1
4, 1
5, 1
6, 1
7, 1
8, 1
9, 1
since you break out of the innermost loop while j is two. Therefore the outermost loop continues.
To break out of both loops, label the outermost loop and denoted in which label in the break statement such as this:
iloop: for (int i=1; i < 3; i++) {
for (int j=1; j < 4; j++) {
if (j == 2) break iloop;
System.out.println(i + ", " + j);
}
}
This code fragment prints
1, 1
and then stops since j is two and the outermost loop is exited.