E:\jdk1.7\test\bin>"c:\Program Files\Java\jdk1.7.0\bin\javap.exe" -c HelloWorld.class
Compiled from "HelloWorld.java"
public class HelloWorld {
  public HelloWorld();
    Code:
       0: aload_0
       1: invokespecial #8                  // Method java/lang/Object."<init>":()V
       4: return

  public static void main(java.lang.String[]);
    Code:
       0: ldc           #16                 // String Hello World
       2: astore_1
       3: getstatic     #18                 // Field java/lang/System.out:Ljava/io/PrintStream;
       6: aload_1
       7: invokevirtual #24                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
      10: return
}