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            sudo apt-get install sun-java6-jdk
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            sudo apt-get install sun-java6-plugin 
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            sudo update-alternatives --config java 
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ln -s jdk
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/bin/java  -d /etc/alternatives/java
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./bashs.sh  /etc/environment
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            JAVA_HOME=/usr/lib/jvm/java-6-sun
            CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar  //linux
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public class Test {
public static void main(String aa[]) {
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public static void main(String[] args) {
 
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