Install Java 1.7_67 on Linux

Install Java with yum on Centos:

$ yum install java-1.7.0-openjdk java-1.7.0-openjdk-devel

Install Java with yum on Debian:

su -
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
apt-get update
apt-get install oracle-java7-installer
exit

OR

#Download Java:

 mkdir -p /usr/java/
 cd /usr/java/
 wget http://download.huangshiyang.com/jdk-7u67-linux-x64.gz
 tar -xzvf jdk-7u67-linux-x64.gz

 wget http://download.huangshiyang.com/jdk-8u111-linux-x64.tar.gz
 tar -xzvf jdk-8u111-linux-x64.tar.gz

#Export JAVA_HOME & PATH:

 vi /etc/profile

#Add the following lines at the end:

 export JAVA_HOME=/usr/java/jdk1.7.0_67
 export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
 export PATH=$PATH:$JAVA_HOME/bin

#Enable config:

 source /etc/profile

#Test

 java -version
 java
 javac
 jps

 

 

 

一般情况下,我们都要将linux自带的OPENJDK卸载掉,然后安装SUN的JDK。

 

首先查看Linux自带的JDK是否已安装。

输入如下命令,查看已经安装的JAVA版本信息。

Linux代码  收藏代码
  1. java -version

 

输入如下命令,查看JDK的信息。

Linux代码  收藏代码
  1. rpm -qa|grep java

如下图所示。


卸载已经安装的JAVA,如下图所示。


卸载完成,如下图所示。


卸载另外一个,如下图所示。


卸载完成,如下图所示。


第二步,安装SUN的JDK。

官网:http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

 

在/usr下建立一个java目录,以备将java程序安装在此目录下,输入如下命令:

Linux代码  收藏代码
  1. mkdir /usr/java

 

把下载好的安装文件拷贝到原系统的共享文件夹share中,通过命令查看文件:

Linux代码  收藏代码
  1. cd /mnt/share
  2. ls -a

 

将文件复制到/usr/java目录下,输入如下命令:

Linux代码  收藏代码
  1. cp *.gz /usr/java

 

查看/usr/java目录,输入如下命令:

Linux代码  收藏代码
  1. cd /usr/java
  2. ls -a

 

如下图所示。


解压文件,输入如下命令:

Linux代码  收藏代码
  1. tar -xzvf jdk-7u13-linux-x64.gz

 

解压后,在/usr/java目录下就会生成一个新的目录jdk1.7.0_13,该目录下存放的是解压后的文件。

为了以后设置方便,我们该生成的目录jdk1.7.0_13改名为jdk,输入如下命令:

Linux代码  收藏代码
  1. mv jdk1.7.0_13 jdk

 

如下图所示。


或者,如果你下载的文件是rpm 格式的话,在上面用tar命令处,替换为下列命令来安装,其他步骤不变。

Linux代码  收藏代码
  1. rpm -ivh jdk-7u13-linux-x64.rpm

 

最后进行环境变量的设置。

输入如下命令,进入配置文件。

Linux代码  收藏代码
  1. vi /etc/profile

 

如下图所示。


进入配置文件,如下图所示,将红色框中的第一行删除,换为下面三行配置信息。


让环境变量生效。

执行配置文件,令其立刻生效,输入如下命令:

Linux代码  收藏代码
  1. source /etc/profile

 

验证是否安装成功,输入如下命令:

Linux代码  收藏代码
  1. Java -version

 

如下图所示,表示安装成功!

 

运行第一个JAVA程序。

新建一个HelloWorld.java文件,如下图所示。


编辑文件,如下图所示。


保存文件,编译并运行,如下图所示。


运行成功!

 

如果下载的是bin结尾的java文件,可以参考:http://blog.csdn.net/cezeffort/article/details/7605863

 

java下载地址:http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

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