Labels are not commonly used in Java, and many developers do not understand how they work. Moreover, their usage makes the control flow harder to
follow, which reduces the code’s readability.
Noncompliant code example
int matrix[][] = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
outer: for (int row = 0; row < matrix.length; row++) { // Non-Compliant
for (int col = 0; col < matrix[row].length; col++) {
if (col == row) {
continue outer;
}
System.out.println(matrix[row][col]); // Prints the elements under the diagonal, i.e. 4, 7 and 8
}
}
Compliant solution
for (int row = 1; row < matrix.length; row++) { // Compliant
for (int col = 0; col < row; col++) {
System.out.println(matrix[row][col]); // Also prints 4, 7 and 8
}
}
