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# rpm -qa|grep jdk ← ²é¿´jdkµÄÐÅÏ¢»òÖ±½ÓÖ´ÐÐ
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# rpm -q jdk
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# java -version
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# ./jdk-1_5_0_16-linux-i586-rpm.bin ← Ñ¡ÔñyesͬÒâÉÏÃæµÄÐÒé
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<1># vi /etc/profile
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export JAVA_HOME=/usr/java/jdk1.5.0_16
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
<3># source /etc/profile Ö´ÐкóÉúЧ
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public class hello {
public static void main(String args [ ])
{
System.out.println("Hello World!");
System.out.println("2009/2/19");
}
}
# javac hello.java
# java hello
Hello World!
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