安装
环境: centos7
OpenJDK1.8下载地址:https://jdk.java.net/java-se-ri/8-MR3
OpenJDK9以上版本下载地址:http://jdk.java.net/archive/
安装JDK8
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| cd /opt/java
wget https://download.java.net/openjdk/jdk8u42/ri/openjdk-8u42-b03-linux-x64-14_jul_2022.tar.gz
tar -xzvf openjdk-8u42-b03-linux-x64-14_jul_2022.tar.gz
mv java-se-8u42-ri java8
# vi /etc/profile
export JAVA_HOME="/opt/java/java8" export JRE_HOME="/opt/java/java8/jre" export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib:$CLASSPATH export PATH=$JAVA_HOME/bin/:$PATH
source /etc/profile
java -version
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参考:https://blog.csdn.net/zxbfriend/article/details/117842392
使用
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| cd /opt/java-demo vi HelloWorld.java
public class HelloWorld { public static void main(String[] args) { System.out.println("Hello World"); } }
javac HelloWorld.java # 编译生成.class java HelloWorld # 执行
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原文链接: https://chenqiaorui.github.io/2023/05/22/第32期:Java/
版权声明: 转载请注明出处.