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# mkdir /usr/java
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# chmod 755 jdk-6u11-linux-i586.bin
# ./jdk-6u11-linux-i586.bin
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#chmod 755 ./jdk-6u11-linux-i586-rpm
# ./jdk-6u11-linux-i586-rpm.bin
# rpm -ivh jdk-6u11-linux-i586-rpm
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#vi /etc/profile
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export JAVA_HOME=/usr/java/jdk1.6.0_10
export CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
export JRE_HOME=$JAVA_HOME/jre
export PATH=$JAVA_HOME/bin:$PATH
È»ºóÖ´ÐÐresource /etc/profile
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java -version
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¡¡¡¡String s = "I AM an Object!";
¡¡¡¡boolean isObject = s instanceof Object;
¡¡¡¡ÎÒÃÇÉùÃ÷ÁËÒ»¸öStrin ......
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StringBuffer sb = new StringBuffer("{'name':'oop'}");
JSONObject jo = JSONObject.fromObject(sb.toString());
Map<String,Object> map = new HashMap<String,Object>();
&nbs ......
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StringBuilder path = new StringBuilder(request.getScheme());
path.append("://").append(request.getServerName());
path.append(":").append(request.getServerPort()).append(request.getContextPath());
System.out.println("***********path:" + path);
Syste ......
java µÄÈ¥µô¿Õ¸ñ¿ÕÐеÄÀý×Ó£º
String so = "haolong, hei eip, "
+"ting, " +
& ......