Java学习_JDK安装

引用官网的一句话，”The JDK is a development environment for building applications, applets, and components using the Java programming language.”哦，原来JDK是一个开发环境。

第一步：下载jdk-6u26-linux-i586.bin
http://download.Oracle.com/otn-pub/java/jdk/6u26-b03/jdk-6u26-linux-i586.bin

第二步：解压安装
#cp ./jdk-6u26-linux-i586.bin /usr/local/lib
#cd /usr/local/lib
#chmod +x jdk-6u26-linux-i586.bin
#./jdk-6u26-linux-i586.bin

第三步：修改环境变量
#vim ~/.bashrc

添加：
export JAVA_HOME=/usr/local/lib/jdk.6.0_26
export JRE_HOME=/usr/local/lib/jdk.6.0_26/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=/usr/local/lib/jdk1.6.0_26/bin:$PATH

第四步：测试
#java -version
java version “1.6.0_26”
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)

class FirstProgram
{
        public static void main(String [] arguments)
        {
                System.out.println(“First java program.“);
        }
}

OK~~不知道这样会不会有问题，先这样吧。