度量衡换算
大二Java课设
学艺不精，多多包涵
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Conversion extends JFrame implements ActionListener{
//建立工具栏中的按钮组件
JToolBar toolBar=new JToolBar();
JButton picLength=new JButton("长度(L)");
JButton picSquare=new JButton("面积(S)");
JButton picVolume=new JButton("体积(V)");
JButton picTemper=new JButton("温度(K)");
JPanel boxLength=new JPanel();
JPanel boxSquare=new JPanel();
JPanel boxVolume=new JPanel();
JPanel boxTemper=new JPanel();
JMenuBar jMenuBar=new JMenuBar();
JMenu aboutMenu=new JMenu("帮助");
JMenuItem aboutItem=new JMenuItem("程序说明");
String[] length={"厘米（cm）","分米（dm）","米（m）","千米（km）"};
String[] square={"平方厘米（cm^2）","平方分米（dm^2）","平方米（m^2）"};
String[] volume={"立方厘米（cm^3）=毫升（mL）","立方分米（dm^3）=升（L）","立方米（m^3）"};
String[] temper={"摄氏度（℃）","华氏度（℉）","开尔文度（°K）"};
//输入
JComboBox jbxLength=new JComboBox(length);
JComboBox jbxSquare=new JComboBox(square);
JComboBox jbxVolume=new JComboBox(volume);
JComboBox jbxTemper=new JComboBox(temper);
//转换成
JComboBox jbxLength1=new JComboBox(length);
JComboBox jbxSquare1=new JComboBox(square);
JComboBox jbxVolume1=new JComboBox(volume);
JComboBox jbxTemper1=new JComboBox(temper);
//输入框
JTextField jtfLength=new JTextField(20);
JTextField jtfLength1=new JTextField(20);
JTextField jtfSquare=new JTextField(20);
JTextField jtfSquare1=new JTextField(20);
JTextField jtfVolume=new JTextField(20);
JTextField jtfVolume1=new JTextField(20);
JTextField jtfTemper=new JTextField(20);
JTextField jtfTemper1=new JTextField(20);
CardLayout centerLayout=new CardLayout(5,5);
JPanel centerPane=new JPanel();
private static final long serialVersionUID = 1L;
public Conversion(){
jtfLength1.setEditable(false);
jtfSquare1.setEditable(false);
jtfVolume1.setEditable(false);
jtfTemper1.setEditable(false);
setTitle("度量衡换算器");
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
boxLength.setLayout(new BoxLayout(boxLength,BoxLayout.Y_AXIS));
boxSquare.setLayout(new BoxLayout(boxSquare,BoxLayout.Y_AXIS));
boxVolume.setLayout(new BoxLayout(boxVolume,BoxLayout.Y_AXIS));
boxTemper.setLayout(new BoxLayout(boxTemper,BoxLayout.Y_AXIS));
//在工具栏中添加按钮组件
toolBar.add(picLength);
toolBar.add(picSquare);
toolBar.add(picVolume);
toolBar.add(picTemper);
picLength.setMnemonic(‘L‘);
picSquare.setMnemonic(‘S‘);
picVolume.setMnemonic(‘V‘);
picTemper.setMnemonic(‘K‘);
boxLength.add(new JLabel("输入:"));//长度布局
boxLength.add(jbxLength);
boxLength.add(jtfLength);
boxLength.add(new JLabel("转换成:"));
boxLength.add(jbxLength1);
boxLength.add(jtfLength1);
boxSquare.add(new JLabel("输入:"));//面积布局
boxSquare.add(jbxSquare);
boxSquare.add(jtfSquare);
boxSquare.add(new JLabel("转换成:"));
boxSquare.add(jbxSquare1);
boxSquare.add(jtfSquare1);
boxVolume.add(new JLabel("输入:"));//体积布局
boxVolume.add(jbxVolume);
boxVolume.add(jtfVolume);
boxVolume.add(new JLabel("转换成:"));
boxVolume.add(jbxVolume1);
boxVolume.add(jtfVolume1);
boxTemper.add(new JLabel("输入:"));//温度布局
boxTemper.add(jbxTemper);
boxTemper.add(jtfTemper);
boxTemper.add(new JLabel("转换成:"));
boxTemper.add(jbxTemper1);
boxTemper.add(jtfTemper1);
centerPane.setLayout(centerLayout);//设置中心区布局
centerPane.add("Length page",boxLength);
centerPane.add("Square page",boxSquare);
centerPane.add("Volume page",boxVolume);
centerPane.add("Temperature page",boxTemper);
aboutMenu.add(aboutItem);
jMenuBar.add(aboutMenu);
setJMenuBar(jMenuBar);
Container contentPane=getContentPane();
contentPane.add(toolBar,BorderLayout.NORTH);
contentPane.add(centerPane, BorderLayout.CENTER);
aboutItem.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ap){
AboutFrame aboutFrame=new AboutFrame();
aboutFrame.setBounds(0, 0, 400, 300);
aboutFrame.setVisible(true);
}
});
//为工具栏中组件添加监听
picLength.addActionListener(this);
picSquare.addActionListener(this);
picVolume.addActionListener(this);
picTemper.addActionListener(this);
//各个面板中下拉框添加监听
jtfLength.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
indexListener(1);
}
});
jtfLength.addFocusListener(new FocusListener(){
public void focusGained(FocusEvent arg0) {}
public void focusLost(FocusEvent arg0) {}
});
jbxLength1.addItemListener(new ItemListener(){
public void itemStateChanged(ItemEvent ie) {
if(jtfLength.getText().equals("")){
jtfLength.setText("0");
}
indexListener(1);
}
});
jtfSquare.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
indexListener(2);
}
});
jbxSquare1.addItemListener(new ItemListener(){
public void itemStateChanged(ItemEvent ie) {
if(jtfSquare.getText().equals("")){
jtfSquare.setText("0");
}
indexListener(2);
}
});
jtfVolume.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
indexListener(3);
}
});
jbxVolume1.addItemListener(new ItemListener(){
public void itemStateChanged(ItemEvent ie) {
if(jtfVolume.getText().equals("")){
jtfVolume.setText("0");
}
indexListener(3);
}
});
jtfTemper.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
indexListener(4);
}
});
jbxTemper1.addItemListener(new ItemListener(){
public void itemStateChanged(ItemEvent ie) {
if(jtfTemper.getText().equals("")){
jtfTemper.setText("0");
}
indexListener(4);
}
});
}
public void indexListener(int index){
switch (index){//换算关系的方法
case 1://长度
int cb10=jbxLength.getSelectedIndex();
int cb11=jbxLength1.getSelectedIndex();
Double temDouble1;
temDouble1=Double.valueOf(jtfLength.getText().trim());
if(cb10==cb11){}
else if(cb10==0&&cb11==1){temDouble1/=10;}
else if(cb10==0&&cb11==2){temDouble1/=100;}
else if(cb10==0&&cb11==3){temDouble1/=100*1000;}
else if(cb10==1&&cb11==0){temDouble1*=10;}
else if(cb10==1&&cb11==2){temDouble1/=10;}
else if(cb10==1&&cb11==3){temDouble1/=10*1000;}
else if(cb10==2&&cb11==0){temDouble1*=100;}
else if(cb10==2&&cb11==1){temDouble1*=10;}
else if(cb10==2&&cb11==3){temDouble1/=1000;}
else if(cb10==3&&cb11==0){temDouble1*=100*1000;}
else if(cb10==3&&cb11==1){temDouble1*=10*1000;}
else if(cb10==3&&cb11==2){temDouble1*=1000;}
jtfLength1.setText(temDouble1.toString());
break;
case 2://面积
int cb20=jbxSquare.getSelectedIndex();
int cb21=jbxSquare1.getSelectedIndex();
Double temDouble2;
temDouble2=Double.valueOf(jtfSquare.getText().trim());
if((cb20==cb21)){}
else if(cb20==0&&cb21==1){temDouble2/=100;}
else if(cb20==0&&cb21==2){temDouble2/=10000;}
else if(cb20==1&&cb21==0){temDouble2*=100;}
else if(cb20==1&&cb21==2){temDouble2/=100;}
else if(cb20==2&&cb21==0){temDouble2*=10000;}
else if(cb20==2&&cb21==1){temDouble2*=100;}
jtfSquare1.setText(temDouble2.toString());
break;
case 3://体积
int cb30=jbxVolume.getSelectedIndex();
int cb31=jbxVolume1.getSelectedIndex();
Double temDouble3;
temDouble3=Double.valueOf(jtfVolume.getText().trim());
if((cb30==cb31)){}
else if(cb30==0&&cb31==1){temDouble3/=1000;}
else if(cb30==0&&cb31==2){temDouble3/=1000000;}
else if(cb30==1&&cb31==0){temDouble3*=1000;}
else if(cb30==1&&cb31==2){temDouble3/=1000;}
else if(cb30==2&&cb31==0){temDouble3*=1000000;}
else if(cb30==2&&cb31==1){temDouble3*=1000;}
jtfVolume1.setText(temDouble3.toString());
break;
case 4: //温度
int cb40=jbxTemper.getSelectedIndex();
int cb41=jbxTemper1.getSelectedIndex();
Double temDouble4;
temDouble4=Double.valueOf(jtfTemper.getText().trim());
if((cb40==cb41)){}
else if(cb40==0&&cb41==1){ temDouble4=(temDouble4*9/5)+32;}
else if(cb40==0&&cb41==2){temDouble4+=273.16;}
else if(cb40==1&&cb41==0){temDouble4=(temDouble4-32)*5/9;}//C＝(F－32)×5／9
else if(cb40==1&&cb41==2){temDouble4=(temDouble4-32)*5/9+273.16;}
else if(cb40==2&&cb41==0){temDouble4-=273.16;}
else if(cb40==2&&cb41==1){temDouble4=(temDouble4-273.16)*9/5+32;}//K ->℉
jtfTemper1.setText(temDouble4.toString());
break;
default: break;
}
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==picLength){
centerLayout.first(centerPane);
}
else if(e.getSource()==picSquare){
centerLayout.first(centerPane);
centerLayout.next(centerPane);
}
else if(e.getSource()==picVolume){
centerLayout.first(centerPane);
centerLayout.next(centerPane);
centerLayout.next(centerPane);
}
else if(e.getSource()==picTemper){
centerLayout.first(centerPane);//1
centerLayout.next(centerPane);//2
centerLayout.next(centerPane);//3
centerLayout.next(centerPane);//4
}
}
public static void main(String[] args) {
try{
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
}
catch(Exception e){
}
Conversion conversion=new Conversion();
conversion.pack();
conversion.setVisible(true);
}
}
import java.awt.*;
import javax.swing.*;
@SuppressWarnings("serial")
public class AboutFrame extends JFrame {
JPanel contentPane;
JScrollPane jSPane=new JScrollPane();
JTextArea aboutText=new JTextArea(5,5);
String temStr;
Font aboutFont=new Font("微软雅黑",1,15);
public AboutFrame(){
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
setSize(new Dimension(600,500));
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
contentPane=(JPanel) getContentPane();
contentPane.setLayout(new BorderLayout());
setSize(new Dimension(400,300));
setTitle("程序说明");
contentPane=(JPanel) getContentPane();
contentPane.setLayout(new BorderLayout());
temStr="此程序为信息工程学院16级面向对象程序设计期末课程设计\n" +
"其中只实现了常用长度、面积、体积、温度单位的换算。\n" +
"其中还有很多没有完善的地方，感谢老师予以指正。\n"+
"\n" +"\n" +"\n" +"\n" +
"计算机科学与技术 金栋梁 学号：2016010xxxx";
aboutText.setText(temStr);
aboutText.setFont(aboutFont);
jSPane.getViewport().add(aboutText,null);
contentPane.add(jSPane, "Center");
this.aboutText.setEditable(false);
}
}
