3. まずは Java で class J { public static void main(String args[]) { System.out.println("Hello World!"); } } -rw-r--r-- 1 kawachi staff 408 Mar 3 23:07 J.class javac して… 408 bytes 4. javap -c でみてみる $ javap -c J.class Compiled from "A.java" class J { J(); Code: 0: aload_0 1: invokespecial #1 // Method java/lang/ Object."<init>":()V 4: return public static void main(java.lang.String[]); Code: 0: getstat