「Java」super()で親クラスのメソッドを呼び出すサンプル
説明
super()で親クラスのメソッドを子クラスで継承します
1.親クラスの定義
package com.arkgame.study.java; // class definition public class EmpParentDemo { String empId; Integer age; // parent constructor public EmpParentDemo(String empId, Integer age) { this.empId = empId; this.age = age; } // parent method parentRes definition public String parentRes() { String target = "Parent method is called AA001"; return target; } }
2.子クラスの定義
package com.arkgame.study.java; // child class extends public class EmpChildDemo extends EmpParentDemo { String depId; // child class constructor public EmpChildDemo(String empId, Integer age, String depId) { super(empId, age); this.depId = depId; } //super.親クラスのメソット public String childRes() { return super.parentRes(); } }
3.実行確認(main)
package com.arkgame.study.java; public class EmpSuperMethod { public static void main(String[] args) { //child object statement EmpChildDemo eCh = new EmpChildDemo("A001", 32, "AB"); //child class method is called String result = eCh.childRes(); System.out.println(result); } }
4.実行結果
Parent method is called AA001