public static void main(String[] args) {
 // main method block
 int x = 0;
 if (x == 0) {
 // then block
 int y;
 } else {
 // else block
 int y;
 }
 while (x++ < 10) {
 // while loop block
 int y;
}
 for (x = 1; x < 10; x++) {
 int y;
 }
 {
 //free block
 int y;
 }
 }