operatorbutton.java

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/* Create by 肖磊, 2004-12-3
 * OperatorButton类实现的是计算器上的运算符按钮.
 */
package calculator;

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

public class OperatorButton extends JButton
{
  public OperatorButton(String operator)
  {
    super(operator);
    this.operator = operator;
    this.setForeground(Color.RED);
  }
  
  public String getOperator()
  {
    return operator;
  }
  
  private String operator;   //该按钮对应的运算符
}