JavaÖеÄö¾ÙÀàÐÍ£¬enum
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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ÔÎĵØÖ·£º http://www.ibm.com/developerworks/cn/data/library/techarticles/dm-0806wangys/
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1. Multiply-Thread
Locks offer two primary features: mutual exclusion and visibility. Mutual exclusion means only one thread at a time may hold a given lock, so only one thread at a time will be using the shared data. Visibility is to ensure that changes made to shared data prior to releasing a lo ......
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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 ......