1.下载好各个版本的JDK
2.配置环境变量(默认JDK)
3.JDK切换
将以下脚本写入到setjdk文件中
@echo off
:: 显示使⽤指南
if "%~1"=="" (
echo Please specify the JDK version you wish to set.
echo Usage: setjdk.bat [version]
echo Example: setjdk.bat 11
goto :EOF
)
set "version=%~1"
:: 检查版本是否受⽀持并调⽤相关的设置
if "%version%"=="8" (
goto :SET_JDK_8
) else if "%version%"=="11" (
goto :SET_JDK_11
) else if "%version%"=="17" (
goto :SET_JDK_17
) else if "%version%"=="21" (
goto :SET_JDK_21
) else (
配置环境变量
确保脚本在jdktool下
echo Invalid JDK version: %version%
echo Supported versions: 8, 11, 17, 21
goto :EOF
)
ENDLOCAL
goto :EOF
:SET_JDK_8
call set "JAVA_HOME=D:\workspace\tool\jdk8"
call set Path=%JAVA_HOME%\bin;%Path%
echo Java version set to 8
java -version
goto :EOF
:SET_JDK_11
set "JAVA_HOME=D:\workspace\tool\jdk11"
set Path=%JAVA_HOME%\bin;%Path%
java -version
goto :EOF
:SET_JDK_17
set "JAVA_HOME=D:\workspace\tool\jdk17"
set Path=%JAVA_HOME%\bin;%Path%
java -version
goto :EOF
:SET_JDK_21
set "JAVA_HOME=D:\workspace\tool\jdk21"
set Path=%JAVA_HOME%\bin;%Path%
java -version
goto :EOF确保保存在jdktool下 不是的话环境变量里改文件名
现在可以用
setjdk xxx来修改版本
