liunx系统安装jdk的方法

# cd /usr/java
 
# chmod 755 jdk-6u45-linux-x64.bin
 
# ./jdk-6u45-linux-x64.bin

# vi /etc/profile

export JAVA_HOME=/usr/java/jdk1.6.0_45
export JAVA_BIN=/usr/java/jdk1.6.0_45/bin
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH

# . /etc/profile

# java -version