[펌]ubuntu 12.04 jdk6~7 수동및 자동설치

<ubuntu 12.04 에서 jdk6 자동 설치법>
일부 검색 사이트에서는 install 시에 sun-java6-jdk 만 언급하는 경우만 있는데
다른 ubuntu 버전에서는 성공했을지 몰라도 12.04 에서는 에러가 발생한다.
찾아보니 sun-java6-plugin 도 같이 설치해줘야 한다.

 

1. 소스 설치
sudo add-apt-repository ppa:flexiondotorg/java
sudo apt-get update
sudo apt-get install sun-java6-jdk sun-java6-plugin

 

2. java vm 변경
sudo update-alternatives --config java

 

3. /etc/profile 수정해서 환경변수 설정
JAVA_HOME=/usr/lib/jvm/java-6-sun/
export JAVA_HOME
export PATH=$PATH:/usr/lib/jvm/java-6-sun/bin

 

4. 새로운 터미널창을 열어서 version 확인하기
java -version
javac -version

 

5. HelloJava.java 작성해서 실행확인하기

cat > HelloJava.java
class HelloJava{
    public static void main(String args[]) {
        System.out.println("Hello World");
    }
}

원본글 주소
http://blog.naver.com/PostView.nhn?blogId=hrk007&logNo=60163302084

<ubuntu 12.04 에서 jdk6 수동 설치법>

Ubuntu GNU/Linux 12.04 LTS (Precise Pangolin) released. I wanted to manually install the Sun JDK 6 and 7 on Ubuntu.

Installing Sun JDK 6 on Ubuntu 12.04:

• Download the sun jdk 6 bin from here.

• Make the bin file executeable:

chmod +x jdk-6u32-linux-x64.bin

• Extract the bin file:

./jdk-6u32-linux-x64.bin

• Move extracted folder to this location:

sudo mv jdk1.6.0_32 /usr/lib/jvm/

• Install new java source in system:

sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_32/bin/javac 1
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_32/bin/java 1
sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.6.0_32/bin/javaws 1

• Choose default java:

sudo update-alternatives --config javac
sudo update-alternatives --config java
sudo update-alternatives --config javaws

• java version test:

java -version

• Verify the symlinks all point to the new java location:

ls -la /etc/alternatives/java*

• Enable Java plugin for Mozilla Firefox (even for Chrome)

#for 64-Bit jdk
sudo ln -s /usr/lib/jvm/jdk1.6.0_32/jre/lib/amd64/libnpjp2.so /usr/lib/mozilla/plugins
#for 32-Bit jdk
sudo ln -s /usr/lib/jvm/jdk1.6.0_32/jre/lib/i386/libnpjp2.so /usr/lib/mozilla/plugins

Installing Sun JDK 7 on Ubuntu 12.04:

• Download the sun jdk 7 tar file from here
• Extract the tar file:

tar -xvzf jdk-7u4-linux-x64.tar.gz

• Move extracted folder to this location:

sudo mv jdk1.7.0_04 /usr/lib/jvm/

• Install new java source in system:

sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_04/bin/javac 1
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_04/bin/java 1
sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.7.0_04/bin/javaws 1

• Choose default java:

sudo update-alternatives --config javac
sudo update-alternatives --config java
sudo update-alternatives --config javaws

• java version test:

java -version

• Verify the symlinks all point to the new java location:

ls -la /etc/alternatives/java*

• Enable Java plugin for Mozilla Firefox (even for Chrome)

#for 64-Bit jdk
sudo ln -s /usr/lib/jvm/jdk1.7.0_04/jre/lib/amd64/libnpjp2.so /usr/lib/mozilla/plugins
#for 32-Bit jdk
sudo ln -s /usr/lib/jvm/jdk1.7.0_04/jre/lib/i386/libnpjp2.so /usr/lib/mozilla/plugins

Update: I have added Java Web Start configuration (Thanks Jack).

Update: I have added Java Plugin configuration for Mozilla Firefox even for Chrome (Thanks shetty).

Update: JAVA_HOME configuration: Some tools require JAVA_HOME variable. You can set JAVA_HOME in Ubuntu so simple: Edit the file .bashrc under your home directory and add the following lines: (if .bashrc is hidden click in Nautilus Menu View > Show Hidden Files)

export JAVA_HOME=/path/your/jdk
export PATH=$JAVA_HOME/bin:$PATH

 

source site : http://www.devsniper.com/ubuntu-12-04-install-sun-jdk-6-7/