package calculatebean;import java.awt.*;import javax.swing.JLabel;/** *  這個Bean是用來處理計(jì)算的，并且返回計(jì)算結(jié)果 */public class CalculateResultBean extends JLabel{  BorderLayout borderLayout1 = new BorderLayout();  private String calculateValue;  public CalculateResultBean()  {    try    {      jbInit();    }    catch(Exception ex)    {      ex.printStackTrace();    }  }  private void jbInit() throws Exception  {    this.setLayout(borderLayout1);  }  public void setCalculateValue(String calculateValue,int X_value,int Y_value)  {    /* 計(jì)算設(shè)置器的實(shí)現(xiàn) */    int caresult1 = 0;    double caresult2 = 0;    String CaResult = null;    if(calculateValue.equals("+"))      {       CaResult = Integer.toString(X_value);       CaResult = CaResult + " + " + Integer.toString(Y_value);       caresult1 = X_value + Y_value;  // 做加法運(yùn)算       CaResult = CaResult + " = " + Integer.toString(caresult1);      }    if(calculateValue.equals("-"))      {       CaResult = Integer.toString(X_value);       CaResult = CaResult + " - " + Integer.toString(Y_value);       caresult1 = X_value - Y_value;  // 做減法運(yùn)算       CaResult = CaResult + " = " + Integer.toString(caresult1);      }    if(calculateValue.equals("*"))      {       CaResult = Integer.toString(X_value);       CaResult = CaResult + " * " + Integer.toString(Y_value);       caresult1 = X_value * Y_value;  // 做乘法運(yùn)算       CaResult = CaResult + " = " + Integer.toString(caresult1);      }    if(calculateValue.equals("/"))      {      if(Y_value == 0)        {         // 如果除數(shù)為0         CaResult = Integer.toString(X_value);         CaResult = CaResult + " / " + Integer.toString(Y_value);         CaResult = CaResult + " = ∞";        }      else        {         // 如果除數(shù)不為0         CaResult = Integer.toString(X_value);         CaResult = CaResult + " / " + Integer.toString(Y_value);         caresult2 = (double)X_value / Y_value;   // 做除法運(yùn)算         CaResult = CaResult + " = " + Double.toString(caresult2);        }      }    this.calculateValue = CaResult;  }  public String getCalculateValue()  {    /* 計(jì)算獲取器的實(shí)現(xiàn) */    return calculateValue;  }}