Ubuntu 下JDK的安装与环境配置

时间:2021-09-20 14:35:42

一、JDK bin文件安装

在 Ubuntu 64 12.4 位操作系统下安装jdk-6u45-linux-x64.bin文件

一、复制JDK到安装目录

1.假设JDK安装文件放在桌面,我们要安装的目录为:/usr/local/java。
我们先在 /usr/local/目录下创建java文件夹:

aosp444@aosp444-virtual-machine:/usr/local$ sudo mkdir java
[sudo] password for aosp444: 
aosp444@aosp444-virtual-machine:/usr/local$ ll
total 44
drwxr-xr-x 11 root root 4096 May 30 20:35 ./
drwxr-xr-x 10 root root 4096 Aug  7  2014 ../
drwxr-xr-x  2 root root 4096 Aug  7  2014 bin/
drwxr-xr-x  2 root root 4096 Aug  7  2014 etc/
drwxr-xr-x  2 root root 4096 Aug  7  2014 games/
drwxr-xr-x  2 root root 4096 Aug  7  2014 include/
drwxr-xr-x  2 root root 4096 May 30 20:35 java/
drwxr-xr-x  3 root root 4096 Aug  7  2014 lib/
lrwxrwxrwx  1 root root    9 May 30 19:38 man -> share/man/
drwxr-xr-x  2 root root 4096 Aug  7  2014 sbin/
drwxr-xr-x  7 root root 4096 Aug  8  2014 share/
drwxr-xr-x  2 root root 4096 Aug  7  2014 src/
aosp444@aosp444-virtual-machine:/usr/local$ 

2.切换到桌面,复制安卓文件到安装目录:

aosp444@aosp444-virtual-machine:~/Desktop$ sudo cp jdk-6u45-linux-x64.bin  /usr/local/java
aosp444@aosp444-virtual-machine:~/Desktop$ 

二、安装JDK

1.切换到JDK安装目录下,修改 安装文件权限:

aosp444@aosp444-virtual-machine:/usr/local/java$ sudo  chmod 777 jdk-6u45-linux-x64.bin
aosp444@aosp444-virtual-machine:/usr/local/java$ 

2.运行安装文件

aosp444@aosp444-virtual-machine:/usr/local/java$ sudo ./jdk-6u45-linux-x64.bin

3.安装成功后,java文件夹下多了一个文件夹:

aosp444@aosp444-virtual-machine:/usr/local/java$ ll
total 70412
drwxr-xr-x  3 root root     4096 May 30 20:46 ./
drwxr-xr-x 11 root root     4096 May 30 20:35 ../
drwxr-xr-x  8 root root     4096 Mar 27  2013 jdk1.6.0_45/
-rwxrwxrwx  1 root root 72087592 May 30 20:39 jdk-6u45-linux-x64.bin*
aosp444@aosp444-virtual-machine:/usr/local/java$ 

三、配置环境变量

1.打开/ect/profile 文件

sudo gedit /etc/profile

2.添加下面的环境变量,要根据安装目录修改,并保存。

# Java Environment
export JAVA_HOME=/usr/local/java/jdk1.6.0_45  

export JRE_HOME=/usr/local/java/jdk1.6.0_45/jre  

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH  

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$JAVA_HOME:$PATH   

3.重启后使其生效并进行验证
也可使用下面的命令不重启使其生效,不过只针对当前域有效。

aosp444@aosp444-virtual-machine:/usr/local/java$ source /etc/profile
aosp444@aosp444-virtual-machine:/usr/local/java$ 

输入java -version 进行验证,成功后如下:

aosp444@aosp444-virtual-machine:/usr/local/java$ java -version
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
aosp444@aosp444-virtual-machine:/usr/local/java$ 

二、JDK tar.gz文件安装

在 Ubuntu 64 16.4 位操作系统下安装文件jdk-7u55-linux-x64.tar.gz 文件

一、复制JDK到安装目录

1.假设JDK安装文件放在桌面,我们要安装的目录为:/usr/local/java。
我们先在 /usr/local/目录下创建java文件夹:

android642@android642-vm:/usr/local$ sudo mkdir java
[sudo] password for android642: 
android642@android642-vm:/usr/local$ ll
total 44
drwxr-xr-x 11 root root 4096 817 11:29 ./
drwxr-xr-x 11 root root 4096 81 19:24 ../
drwxr-xr-x  2 root root 4096 81 19:17 bin/
drwxr-xr-x  2 root root 4096 81 19:17 etc/
drwxr-xr-x  2 root root 4096 81 19:17 games/
drwxr-xr-x  2 root root 4096 81 19:17 include/
drwxr-xr-x  2 root root 4096 817 11:29 java/
drwxr-xr-x  4 root root 4096 81 19:20 lib/
lrwxrwxrwx  1 root root    9 816 17:59 man -> share/man/
drwxr-xr-x  2 root root 4096 81 19:17 sbin/
drwxr-xr-x  8 root root 4096 81 19:27 share/
drwxr-xr-x  2 root root 4096 81 19:17 src/
android642@android642-vm:/usr/local$ cd java
android642@android642-vm:/usr/local/java$ 

2.切换到桌面,复制安卓文件到安装目录:

android642@android642-vm:~/Desktop$ sudo cp jdk-7u80-linux-x64.tar.gz /usr/local/java
android642@android642-vm:~/Desktop$

二、安装JDK

1.解压jdk-7u80-linux-x64.tar.gz
切换到/usr/loal/java目录,将jdk-7u80-linux-x64.tar.gz文件解压到当前目录

android642@android642-vm:/usr/local/java$ sudo tar -zxvf jdk-7u80-linux-x64.tar.gz

2.解压成功后,java文件夹下多了一个文件夹jdk1.7.0_80

android642@android642-vm:/usr/local/java$ ll
total 149952
drwxr-xr-x  3 root root      4096 817 11:39 ./
drwxr-xr-x 11 root root      4096 817 11:29 ../
drwxr-xr-x  8 uucp  143      4096 411  2015 jdk1.7.0_80/
-rwxr--r--  1 root root 153530841 817 11:33 jdk-7u80-linux-x64.tar.gz*
android642@android642-vm:/usr/local/java$ 

三、配置环境变量

1.打开/ect/profile 文件

sudo gedit /etc/profile

2.添加下面的环境变量,要根据安装目录修改,并保存。

# Java Environment
export JAVA_HOME=/usr/local/java/jdk1.7.0_80  

export JRE_HOME=/usr/local/java/jdk1.7.0_80/jre  

export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH  

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$JAVA_HOME:$PATH   

3.重启后使其生效并进行验证
也可使用下面的命令不重启使其生效,不过只针对当前域有效。

android642@android642-vm:/usr/local/java$ source /etc/profile

输入java -version 进行验证,成功后如下:

android642@android642-vm:/usr/local/java$ java -version
java version "1.7.0_80"
Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
android642@android642-vm:/usr/local/java$