Execution order of two nested for loops

1. The outer layer determines the cyclic condition and satisfies the outer loop body.
2. Inner layer Judging cycle conditions
3. Inner Loop Body Execution
4. The inner loop variable accumulates and returns to 2 to execute until the inner condition is not satisfied
5. The outer loop variable accumulates and goes back to 1 execution until the outer loop condition is not met, and exits the loop completely
for (int j=1,j<=9;j++) {
  for (int i=1;i<=j;i++) {
   SYSTEM.OUT.PRINTLN (i+ "*" +j+ "=" +i*j+ ";");

}

}
99 multiplication table for loop body

Execution order of two nested for loops