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public class MyEnumTestMain {
public enum MyenumTest{red,blue,green,black}//¶¨Òåö¾ÙÀàÐÍ

public static void main(String[] args) {
MyenumTest mt = MyenumTest.red;//redÏ൱ÓÚö¾ÙµÄ¾²Ì¬ÊôÐÔ

switch(mt){
case red:
System.out.println("red");
break;
case blue:
System.out.println("blue");
break;
default:
System.out.println("ÆäËû");
}
}
}


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Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@localhost:1521:ts"; //tsΪÊý¾Ý¿âµÄSID
String user="sa";
String password="";
Connection conn= DriverManager.getConnection(url,u ......

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package com.test.j2se;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5 {
/**Êý¾Ý¼ÓÃÜ
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
MessageDigest code = MessageD ......
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