Why is this an issue?

An infinite loop will never end while the program runs, meaning you have to kill the program to get out of the loop. Every loop should have an end condition, whether by meeting the loop’s termination condition or via a break statement.

Noncompliant code example

for (;;) {  // Noncompliant; end condition omitted
  // ...
}

int j;
while (true) { // Noncompliant; end condition omitted
  j++;
}

int k;
boolean b = true;
while (b) { // Noncompliant; b never written to in loop
  k++;
}

Compliant solution

int j;
while (true) { // reachable end condition added
  j++;
  if (j  == Integer.MIN_VALUE) {  // true at Integer.MAX_VALUE +1
    break;
  }
}

int k;
boolean b = true;
while (b) {
  k++;
  b = k < Integer.MAX_VALUE;
}

Resources

Standards