compiler-explorer/test/java/square/output.asm

class Square {
  Square();
line 2:       0: aload_0
line 2:       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
line 2:       4: return


  static int square(int);
line 4:       0: iload_0
line 4:       1: iload_0
line 4:       2: imul
line 4:       3: ireturn

}