package day8_15;
import java.util.HashSet;
import java.util.Set;
class Employee{
private int no ;
private String name;
public Employee() {
super();
}
public Employee(int no, String name) {
super();
this.no = no;
this.name = name;
}
public int getNo() {
return no;
}
public void setNo(int no) {
this.no = no;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public int hashCode() {
//哈希地址
return name.hashCode()+no;
}
@Override
public boolean equals(Object obj) {
Employee e = (Employee)obj;
return this.no==e.no&&this.name==e.name;
}
@Override
public String toString() {
return "编号:"+no+"姓名:"+name;
}
}
public class TestSet {
public static void main(String[] args) {
Set<Employee> emps = new HashSet<>();
Employee zhangsan = new Employee(1, "张三");
Employee lisi = new Employee(2, "李四");
Employee wangwu = new Employee(1, "张三");
emps.add(wangwu);
emps.add(lisi);
emps.add(zhangsan);
emps.forEach(System.out::println);
}
}
java中HashSet去重的方法
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转载自blog.csdn.net/qq_42676052/article/details/81749773
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