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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 User {
String name;
String age;
public User(String name,String age){
this.name=name;
this.age=age;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(St ......
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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 ......