linux 上運行java

GOROOT=/usr/local/go
JAVA_HOME=/home/air/java/jdk
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
PATH=$JAVA_HOME/bin:$PATH:$GOROOT/bin
export JAVA_HOME CLASSPATH PATH GOROOT

javac T.clss

java T

javap  T.class

javap -verbose T.class

T.java:

[air@air  java]$ javap T.class
Compiled from "T.java"
public class T {
  public T();
  public static void main(java.lang.String[]);
}
[air@air  java]$ javap -verbose T.class
Classfile /home/air/java/T.class
  Last modified 2013-11-14; size 507 bytes
  MD5 checksum fdf8dc41c21eda6ead18c1057d2f9eb2
  Compiled from "T.java"
public class T
  SourceFile: "T.java"
  minor version: 0
  major version: 51
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #6.#20         //  java/lang/Object."<init>":()V
   #2 = Fieldref           #21.#22        //  java/lang/System.out:Ljava/io/PrintStream;
   #3 = String             #23            //  hello word!\n
   #4 = Methodref          #24.#25        //  java/io/PrintStream.println:(Ljava/lang/String;)V
   #5 = Class              #26            //  T
   #6 = Class              #27            //  java/lang/Object
   #7 = Utf8               <init>
   #8 = Utf8               ()V
   #9 = Utf8               Code
  #10 = Utf8               LineNumberTable
  #11 = Utf8               LocalVariableTable
  #12 = Utf8               this
  #13 = Utf8               LT;
  #14 = Utf8               main
  #15 = Utf8               ([Ljava/lang/String;)V
  #16 = Utf8               args
  #17 = Utf8               [Ljava/lang/String;
  #18 = Utf8               SourceFile
  #19 = Utf8               T.java
  #20 = NameAndType        #7:#8          //  "<init>":()V
  #21 = Class              #28            //  java/lang/System
  #22 = NameAndType        #29:#30        //  out:Ljava/io/PrintStream;
  #23 = Utf8               hello word!\n
  #24 = Class              #31            //  java/io/PrintStream
  #25 = NameAndType        #32:#33        //  println:(Ljava/lang/String;)V
  #26 = Utf8               T
  #27 = Utf8               java/lang/Object
  #28 = Utf8               java/lang/System
  #29 = Utf8               out
  #30 = Utf8               Ljava/io/PrintStream;
  #31 = Utf8               java/io/PrintStream
  #32 = Utf8               println
  #33 = Utf8               (Ljava/lang/String;)V
{
  public T();
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0       
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return        
      LineNumberTable:
        line 1: 0
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
               0       5     0  this   LT;

  public static void main(java.lang.String[]);
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
         3: ldc           #3                  // String hello word!\n
         5: invokevirtual #4                  // Method java/io/PrintStream.println:(Ljava/lang/String;)V
         8: return        
      LineNumberTable:
        line 7: 0
        line 9: 8
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
               0       9     0  args   [Ljava/lang/String;
}