[root@adamhuan-linux Helloworld]# pwd
/script/java_data/Helloworld
[root@adamhuan-linux Helloworld]# ll
总用量 4
drwxr-xr-x 2 root root 29 7月 30 16:44 classCode
-rw-r--r-- 1 root root 135 7月 30 16:48 Helloworld.java
[root@adamhuan-linux Helloworld]#
[root@adamhuan-linux Helloworld]# cat Helloworld.java
public class Helloworld{
public static void main(String[] args){
System.out.println("Hello world, Java; Hello world, Linux");
}
}
[root@adamhuan-linux Helloworld]#
[root@adamhuan-linux Helloworld]# javac -d classCode/ Helloworld.java
[root@adamhuan-linux Helloworld]#
[root@adamhuan-linux Helloworld]# cd classCode/
[root@adamhuan-linux classCode]#
[root@adamhuan-linux classCode]# ll
总用量 4
-rw-r--r-- 1 root root 451 7月 30 16:51 Helloworld.class
[root@adamhuan-linux classCode]#
[root@adamhuan-linux classCode]# file Helloworld.class
Helloworld.class: compiled Java class data, version 52.0
[root@adamhuan-linux classCode]#
[root@adamhuan-linux classCode]# strings Helloworld.class
<init>
Code
LineNumberTable
main
([Ljava/lang/String;)V
SourceFile
Helloworld.java
%Hello world, Java; Hello world, Linux
Helloworld
java/lang/Object
java/lang/System
Ljava/io/PrintStream;
java/io/PrintStream
println
(Ljava/lang/String;)V
[root@adamhuan-linux classCode]#
[root@adamhuan-linux classCode]# java Helloworld
Hello world, Java; Hello world, Linux
[root@adamhuan-linux classCode]#