package calculatebean;import java.awt.*;import javax.swing.JPanel;/** *  這個(gè)Bean是用來處理計(jì)算的，并且返回計(jì)算結(jié)果 */public class CalculateResultBean extends JPanel{  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 CaReuslt = null;    switch(calculateValue)    {      case "+":        {          caresult1 = X_value + Y_value;          CaResult = Integer.toString(caresult1);          break;        }      case "-":        {          caresult1 = X_value - Y_value;          CaResult = Integer.toString(caresult1);          break;        }      case "*":        {          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);          break;        }      case "/":        {          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);            }          break;        }      }    this.calculateValue = CaResult;  }  public String getCalculateValue()  {    /* 計(jì)算獲取器的實(shí)現(xiàn) */    return calculateValue;  }}