settest.java

加密解密技巧

package com.collection;

import java.util.HashSet;
import java.util.Iterator;

public class SetTest {
	public static void main(String[] args) {
		int i = 1;
		double d = 10;
		char c = 'a';
		boolean b = false;
		
		String str = "abc";
		String str2 = "def";
		String str3 = "def";
		
		Student student = new Student();
		student.setName("张三");
		student.setAge(23);
		
		Student student1 = new Student();
		student1.setName("张三");
		student1.setAge(24);
		System.out.println("********");
		System.out.println(student.hashCode());
		System.out.println(student1.hashCode());
		System.out.println("********");
		HashSet set = new HashSet();
		set.add(i);
		set.add(d);
		set.add(c);
		set.add(b);
		set.add(str);
		set.add(student);
		set.add(student1);
		set.add(str2);
		set.add(str3);
		
		Iterator iterator = set.iterator();
		while(iterator.hasNext()){
			System.out.println(iterator.next());
		}

	}

}