import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class ch5_e5_13c extends Applet implements ActionListener
{
final int NUMBER = 4;
ComplexInputPanel inputComplexPnl[][];
ComplexOutputPanel outputComplexPnl[];
Button caculateBtn[];
final String COMMAND_NAME[] = {"ADD","MINUS","MULTIPLE","DIVIDE"};
public ch5_e5_13c()
{
super();
//初始化
inputComplexPnl = new ComplexInputPanel[NUMBER][2];
outputComplexPnl = new ComplexOutputPanel[NUMBER];
caculateBtn = new Button[NUMBER];
for(int i=0; i<NUMBER; i++)
{
for(int j=0; j<2; j++)
inputComplexPnl[i][j] = new ComplexInputPanel();
outputComplexPnl[i] = new ComplexOutputPanel();
caculateBtn[i] = new Button("=");
caculateBtn[i].addActionListener(this);
caculateBtn[i].setActionCommand(COMMAND_NAME[i]);
}
//加入各图形界面成分
for(int i=0; i<NUMBER; i++)
{
//第一个操作数的输入界面成分
add(inputComplexPnl[i][0]);
//操作符
switch(i)
{
case 0: add(new Label("+"));
break;
case 1: add(new Label("-"));
break;
case 2: add(new Label("*"));
break;
case 3: add(new Label("/"));
break;
}
//第二个操作数的输入界面成分
add(inputComplexPnl[i][1]);
//启动运算的按钮
add(caculateBtn[i]);
//运算结果的输出界面成分
add(outputComplexPnl[i]);
}//for
}
public void init()
{
for(int i=0; i<NUMBER; i++)
{
for(int j=0; j<2; j++)
inputComplexPnl[i][j].resetFaces();
outputComplexPnl[i].resetFaces();
}
}//init
public void actionPerformed(ActionEvent e)
{
try
{
if(e.getActionCommand().equals(COMMAND_NAME[0]))
{
inputComplexPnl[0][0].getComplexNumber();
outputComplexPnl[0].setComplexNumber(
inputComplexPnl[0][0].complexAdd(
inputComplexPnl[0][1].getComplexNumber()));
}
else if(e.getActionCommand().equals(COMMAND_NAME[1]))
{
inputComplexPnl[1][0].getComplexNumber();
outputComplexPnl[1].setComplexNumber(
inputComplexPnl[1][0].complexMinus(
inputComplexPnl[1][1].getComplexNumber()));
}
else if(e.getActionCommand().equals(COMMAND_NAME[2]))
{
inputComplexPnl[2][0].getComplexNumber();
outputComplexPnl[2].setComplexNumber(
inputComplexPnl[2][0].complexMulti(
inputComplexPnl[2][1].getComplexNumber()));
}
else if(e.getActionCommand().equals(COMMAND_NAME[3]))
{
inputComplexPnl[3][0].getComplexNumber();
outputComplexPnl[3].setComplexNumber(
inputComplexPnl[3][0].complexDivide(
inputComplexPnl[3][1].getComplexNumber()));
}
else
{
showStatus("未定义这种事件的处理操作" + e.toString());
return;
}
}
catch(NumberFormatException nfe)
{
showStatus("数据格式错误，请重新输入。");
for(int i=0; i<NUMBER; i++)
{
for(int j=0; j<2; j++)
inputComplexPnl[i][j].resetFaces();
outputComplexPnl[i].resetFaces();
}
}
}
}
interface ComplexCaculationsInterface
{
public ComplexNumber complexAdd(ComplexNumber c);
public ComplexNumber complexAdd(double d);
public ComplexNumber complexMinus(ComplexNumber c);
public ComplexNumber complexMinus(double d);
public ComplexNumber complexMulti(ComplexNumber c);
public ComplexNumber complexMulti(double d);
public ComplexNumber complexDivide(double d);
public ComplexNumber complexDivide(ComplexNumber c);
}
abstract class ComplexPanel extends Panel implements ComplexCaculationsInterface
{
ComplexNumber innerComplex;
Label prefixLabel,midLabel,suffixLabel;
ComplexPanel()
{
super();
innerComplex = new ComplexNumber();
prefixLabel = new Label("(");
midLabel = new Label("+");
suffixLabel = new Label("i)");
createAddFaces();
}
abstract void createAddFaces();
abstract ComplexNumber getComplexNumber()
throws NumberFormatException;
abstract void setComplexNumber(ComplexNumber c);
abstract void resetFaces();
public ComplexNumber complexAdd(ComplexNumber c)
{
return innerComplex.complexAdd(c);
}
public ComplexNumber complexAdd(double d)
{
return innerComplex.complexAdd(d);
}
public ComplexNumber complexMinus(ComplexNumber c)
{
return innerComplex.complexMinus(c);
}
public ComplexNumber complexMinus(double d)
{
return innerComplex.complexMinus(d);
}
public ComplexNumber complexMulti(ComplexNumber c)
{
return innerComplex.complexMulti(c);
}
public ComplexNumber complexMulti(double d)
{
return innerComplex.complexMulti(d);
}
public ComplexNumber complexDivide(double d)
{
return innerComplex.complexDivide(d);
}
public ComplexNumber complexDivide(ComplexNumber c)
{
return innerComplex.complexDivide(c);
}
}
class ComplexInputPanel extends ComplexPanel
{
private TextField realTfd,imaginaryTfd;
void createAddFaces()
{
realTfd = new TextField(3);
imaginaryTfd = new TextField(3);
add(prefixLabel);
add(realTfd);
add(midLabel);
add(imaginaryTfd);
add(suffixLabel);
}
ComplexNumber getComplexNumber() throws NumberFormatException
{
innerComplex = new ComplexNumber(
Double.parseDouble(realTfd.getText()),
Double.parseDouble(
(imaginaryTfd.getText().equals("")) ? "0" :
imaginaryTfd.getText() )
);
return innerComplex;
}
void setComplexNumber(ComplexNumber c)
{
double r,i;
r = c.getRealPart();
i = c.getImaginaryPart();
innerComplex.setRealPart(r);
innerComplex.setImaginaryPart(i);
realTfd.setText(Double.toString(r));
imaginaryTfd.setText(Double.toString(i));
}
void resetFaces()
{
realTfd.setText("");
imaginaryTfd.setText("");
}
}
class ComplexOutputPanel extends ComplexPanel
{
private Label realLbl,imaginaryLbl;
void createAddFaces()
{
realLbl = new Label(" ");
imaginaryLbl = new Label(" ");
add(prefixLabel);
add(realLbl);
add(midLabel);
add(imaginaryLbl);
add(suffixLabel);
}
ComplexNumber getComplexNumber() throws NumberFormatException
{
innerComplex = new ComplexNumber(
Double.parseDouble(realLbl.getText()),
Double.parseDouble(
(imaginaryLbl.getText().equals("")) ? "0" :
imaginaryLbl.getText() )
);
return innerC
java 语言与 面向对象 程序设计题解及实验指导 （299个子文件） 
TEST.AU 1010B ch6_e6_23.class 4KB SimpleTextEditor.class 4KB ch6_e6_14.class 4KB ch5_e5_13b.class 4KB MySimpleTextEditor.class 3KB GameFrame.class 3KB MyFrame.class 3KB GetDataStoreInFileFrame.class 3KB ch6_e6_22.class 3KB ch6_e6_13.class 3KB ch7_e7_21.class 3KB ch8_e8_19.class 3KB ch6_e6_11.class 3KB ch7_e7_24.class 3KB GetDataStoreInFileFrame.class 3KB ch5_e5_13c.class 3KB ch6_e6_16.class 2KB ch7_e7_22.class 2KB ch6_e6_24.class 2KB ch7_e7_18.class 2KB ch5_e5_13d.class 2KB ch3_e3_17.class 2KB ch4_e4_11.class 2KB ch3_e3_16.class 2KB ch7_e7_8.class 2KB NumberInput.class 2KB ch7_e7_7.class 2KB ch8_e8_31.class 2KB AnimateApplet.class 2KB MyFrame.class 2KB ch8_e8_18.class 2KB ComplexNumber.class 2KB ch6_e6_27.class 2KB ch7_e7_20.class 2KB ch3_e3_13.class 2KB test6.class 2KB ch8_e8_22.class 2KB ch7_e7_5.class 2KB ch3_e3_14.class 2KB ComplexInputPanel.class 2KB MoveBallFrame.class 2KB MyFrame.class 2KB ch3_e3_9.class 2KB ApplctFrame.class 2KB Student.class 2KB ComplexOutputPanel.class 2KB ComplexNumber.class 1KB ch8_e8_30.class 1KB MyFrame.class 1KB MyFrame.class 1KB ch7_e7_16.class 1KB LinkList.class 1KB PhoneCard.class 1KB ch3_e3_10.class 1KB ch7_e7_19.class 1KB ComplexPanel.class 1KB ch8_e8_20.class 1KB MyFrame.class 1KB ch8_e8_17.class 1KB LinkList.class 1KB ch5_e5_12.class 1KB ch6_e6_19.class 1KB ch7_e7_15.class 1KB SimpleGraphicsInOut.class 1KB PhoneCard200.class 1KB ch8_e8_11.class 1KB ch3_e3_11.class 1KB PhoneCard200.class 1KB BinaryTree.class 1KB Student.class 1KB ch6_e6_17.class 1KB ch4_e4_8.class 1KB MyFrame.class 1KB test.class 1KB Student.class 966B Student.class 965B Ch3ErrorCorrect1.class 953B ch6_e6_25.class 937B test5.class 931B test2.class 917B ch6_e6_4.class 910B ch2_e3_8.class 872B SimpleCharInOut.class 855B test3.class 846B ch6_e6_8.class 845B ApplicationInOut.class 836B ch7_e7_6.class 816B RecursionExample.class 776B ch6_e6_20.class 769B TreeNode.class 768B test4.class 747B GameTimeTimerTask.class 716B MyQueue.class 705B sup_6_1.class 703B MyThread.class 688B Node.class 680B Node.class 680B ch7_e7_4.class 636B ch6_e6_30.class 632B共 299 条
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