operationbutton.java

来自「该代码用JAVA实现了简单的数字计算功能」· Java 代码 · 共 96 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class OperationButton extends Button{
     String operator;
     public OperationButton(String s){
       super(s);
       operator = s;
      setForeground(Color.red);
    }

 public String getOperator(){
     return operator;
  }
}