39 lines
1010 B
Java
39 lines
1010 B
Java
package com.inmind.set02;
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import java.util.Objects;
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public class Student {
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String name;
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int age;
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public Student(String name, int age) {
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this.name = name;
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this.age = age;
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}
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//如果没有重写equals方法，默认使用==比较地址来判断是否相同
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//已经重写了equals方法，比较属性的内容
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@Override
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public boolean equals(Object o) {
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if (o == null || getClass() != o.getClass()) return false;
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Student student = (Student) o;
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return age == student.age && name.equals(student.name);
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}
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//当前学生类的哈希值，跟内容有关，属性相同的学生对象的哈希值必定相同
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@Override
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public int hashCode() {
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int result = name.hashCode();
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result = 31 * result + age;
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return result;
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}
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@Override
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public String toString() {
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return "Student{" +
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"name='" + name + '\'' +
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", age=" + age +
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'}';
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}
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}
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