转载 如何使用批处理 动态改变path实现改变JDK版本

http://www.cnblogs.com/xdp-gacl/p/5209386.html

1 @echo off
 2 
 3 rem --- Base Config 配置JDK的安装目录 ---
 4 :init 
 5 set JAVA_HOME_1_8=C:Program FilesJavajdk1.8.0_11
 6 set JAVA_HOME_1_7=C:Program FilesJavajdk1.7.0_45
 7 set JAVA_HOME_1_6=C:Program FilesJavajdk1.6.0_45
 8 :start 
 9 echo 当前使用的JDK 版本: 
10 java -version 
11 echo. 
12 echo ============================================= 
13 echo jdk版本列表 
14 echo 1.8 
15 echo 1.7
16 echo 1.6 
17 echo ============================================= 
18 
19 :select
20 set /p opt=请选择jdk版本： 
21 if %opt%==1.8 (
22     set TARGET_JAVA_HOME=%JAVA_HOME_1_8%
23 )
24 if %opt%==1.7 (
25     set TARGET_JAVA_HOME=%JAVA_HOME_1_7%
26 )
27 if %opt%==1.6 (
28     set TARGET_JAVA_HOME=%JAVA_HOME_1_6%
29 )
30 
31 echo 当前选择的Java路径:%TARGET_JAVA_HOME%
32 
33 wmic ENVIRONMENT where "name='JAVA_HOME'" delete
34 wmic ENVIRONMENT create name="JAVA_HOME",username="<system>",VariableValue="%TARGET_JAVA_HOME%"
35 
36 rem -- refresh env ---
37 call RefreshEnv
38 
39 echo 请按任意键退出!   
40 pause>nul
41 
42 @echo on