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java List ÅÅÐò Collections.sort() ¶Ô List ÅÅÐò

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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