编写学生类 Student，提供如下字段：age（年龄），name（姓名）。为学生类提供带参数的构造方法用于初始化这两个字段。编写测试类，创建两个学生类的对象stu1和stu2，测试是否stu1==stu2，或者是否stu1。squals（stu2）相等？
------解决方案--------------------------------------------------------
package com.fzw.test;
public class Student {
private int age;
private String name;
public Student(int age, String name) {
super();
this.age = age;
this.name = name;
}
public static void main(String[] args) {
try {
testStudent();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void testStudent() throws Exception {
Student stu1=new Student(1, "胡总");
Student stu2=new Student(2, "温总");
System.out.println("对两学生进行=判断"+stu1.campareStudent(stu1, stu2, 1));
System.out.println("对两学生进行equals判断"+stu2.campareStudent(stu1, stu2, 2));
}
@SuppressWarnings("unused")
private boolean campareStudent(Object stu1,Object stu2,int i) {
return (i==1?stu1==stu2:stu1.equals(stu2));
// TODO Auto-generated method stub
}
}
------解决方案--------------------------------------------------------
Student类
- Java code
public class Student { private String name; private int age; public Student(){} public Student(String name, int age) { super(); this.name = name; this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + age; result = prime * result + ((name == null) ? 0 : name.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; Student other = (Student) obj; if (age != other.age) return false; if (name == null) { if (other.name != null) return false; } else if (!name.equals(other.name)) return false; return true; } }