进阶day03-对象的哈希值(hashCode())

javaSE-day03/src/com/inmind/set02/Student.java

@@ -0,0 +1,29 @@
+package com.inmind.set02;
+
+import java.util.Objects;
+
+public class Student {
+    String name;
+    int age;
+
+    public Student(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Student student = (Student) o;
+        return age == student.age && name.equals(student.name);
+    }
+
+    @Override
+    public int hashCode() {
+        int result = name.hashCode();
+        result = 31 * result + age;
+        return result;
+    }
+}