怎么样用java的Swing来编写个小程序,用来转换日文的平假名与片假名!! 怎样用Swing界面来编写个简单的小程序,只要一个输入框一个输出框,和一个转换按钮既可,点击后能实现日文平假名与片假名的转换,急急急啊!!希望各位老大指点下小弟啊,多谢啊!! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 import java.awt.*;import java.awt.event.ActionEvent;import java.io.IOException;import java.awt.event.ActionListener;import javax.swing.*;class Person{ String Course="notepad.exe"; public void fun() throws IOException { Runtime run=Runtime.getRuntime(); run.exec(Course); }}public class System extends JFrame{ public System() { this.setTitle("WGS System..."); Container container=this.getContentPane(); container.setLayout(new BorderLayout()); JPanel Jup=new JPanel();//上边内容 JButton jb=new JButton("open"); JButton jb1=new JButton("close"); jb1.addActionListener(new Bstudy()); JButton jb2=new JButton("max"); Jup.add(jb); Jup.add(jb1); Jup.add(jb2); JPanel Jcenter=new JPanel();//下边 JButton JB =new JButton("open notepad"); JB.addActionListener( new ButtonEventHandle()); Jcenter.add(JB); Panel pright=new Panel();//右边 container.add(Jup,BorderLayout.BEFORE_FIRST_LINE); container.add(Jcenter,BorderLayout.SOUTH); this.setVisible(true); this.setSize(500,500); } class ButtonEventHandle implements ActionListener{ public void actionPerformed(ActionEvent e) { Person p=new Person(); try { p.fun(); } catch (IOException e1) { e1.printStackTrace(); } } } class Bstudy implements ActionListener{ public void actionPerformed(ActionEvent e) { } } public static void main(String args[]) { new System(); }} import java.awt.*;import java.awt.event.*;public class Counters extends Frame{ Panel panel; TextField tf; Button b[],add,sub,mul,div,cle, equ,dot,two,sqr,tsex; Boolean isDot,operated,equaled; double storedNumber; char lastOperator; public Counters(){ isDot=false; operated=false; equaled=false; storedNumber=0; lastOperator='?'; panel=new Panel(); tf=new TextField(); b=new Button[10]; for(int i=0;i<10;i++){b[i]=new Button(""+i);} add=new Button("+"); sub=new Button("-"); mul=new Button("*"); div=new Button("/"); cle=new Button("Cle"); equ=new Button("="); dot=new Button("."); two=new Button("N(2)"); sqr=new Button("√"); tsex=new Button("N(16)"); this.add(tf,BorderLayout.NORTH); this.add(panel,BorderLayout.CENTER); panel.setLayout(new GridLayout(5,4,10,10)); panel.add(b[1]); panel.add(b[2]); panel.add(b[3]); panel.add(add); panel.add(b[4]); panel.add(b[5]); panel.add(b[6]); panel.add(sub); panel.add(b[7]); panel.add(b[8]); panel.add(b[9]); panel.add(mul); panel.add(b[0]); panel.add(dot); panel.add(sqr); panel.add(div); panel.add(two); panel.add(tsex); panel.add(cle); panel.add(equ); this.setTitle("计算器"); this.setSize(250,350); this.setVisible(true); for(int i=0;i<10;i++){b[i].addActionListener(new Monitor());} add.addActionListener(new Monitor()); sub.addActionListener(new Monitor()); mul.addActionListener(new Monitor()); div.addActionListener(new Monitor()); dot.addActionListener(new Monitor()); sqr.addActionListener(new Monitor()); equ.addActionListener(new Monitor()); cle.addActionListener(new Monitor()); this.addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); two.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ int temp=Integer.parseInt(tf.getText()); tf.setText(""+Integer.toBinaryString(temp)); } }); tsex.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ int temp=Integer.parseInt(tf.getText()); tf.setText(""+Integer.toHexString(temp)); } }); } class Monitor implements ActionListener{ public void actionPerformed(ActionEvent e){ Button btn=(Button)e.getSource(); if(btn==cle){ tf.setText("0"); isDot=false; storedNumber=0; lastOperator='?'; } else if(btn==equ){ operate('='); equaled=true; } else if(btn==add){ operate('+'); equaled=false; } else if(btn==sub){ operate('-'); equaled=false; } else if(btn==mul){ operate('*'); equaled=false; } else if(btn==div){ operate('/'); equaled=false; } else if(btn==sqr){ operate('s'); operate('='); equaled=true; } else{ if(equaled) storedNumber=0; for(int i=0;i<10;i++) if(btn==b[i]){ if(tf.getText().equals("0")) tf.setText(""+i); else if(!operated) tf.setText(tf.getText()+i); else{ tf.setText(""+i); operated=false; } } if(btn==dot&&!isDot){ tf.setText(tf.getText()+"."); isDot=true; } } } } public void operate(char operator){ double currentNumber = Double.valueOf(tf.getText()).doubleValue(); if (lastOperator == '?') storedNumber = currentNumber; else if (lastOperator == '+') storedNumber += currentNumber; else if (lastOperator == '-') storedNumber -= currentNumber; else if (lastOperator == '*') storedNumber *= currentNumber; else if (lastOperator == '/') storedNumber /= currentNumber; else if (lastOperator == 's') storedNumber = Math.sqrt(currentNumber); else if (lastOperator == '=' && equaled) storedNumber = currentNumber; tf.setText("" + storedNumber); operated = true; lastOperator = operator; } public static void main(String args[]){ new Counters(); } } 刚下载了一个java程序,不如如何打开,高手来看看 java反射 帮我看看,哪儿错了? 连接oracle数据库相关问题 File类的createNewFile()方法为什么抛出了异常? 大虾帮我看看这是怎么回事儿啊 关于用Java生成Excel 怎么把JInternalFrame加上滚动条? 获取图片大小问题,,大虾帮小弟看看.. mm是新手,请教线程调度问题.附程序.多谢各位大哥大姐!! 一个小计算器中的小问题 java 统计字数
import java.awt.event.ActionEvent;
import java.io.IOException;
import java.awt.event.ActionListener;
import javax.swing.*;
class Person
{
String Course="notepad.exe";
public void fun() throws IOException
{
Runtime run=Runtime.getRuntime();
run.exec(Course);
}
}
public class System extends JFrame
{ public System()
{
this.setTitle("WGS System...");
Container container=this.getContentPane();
container.setLayout(new BorderLayout());
JPanel Jup=new JPanel();//上边内容
JButton jb=new JButton("open");
JButton jb1=new JButton("close");
jb1.addActionListener(new Bstudy());
JButton jb2=new JButton("max");
Jup.add(jb);
Jup.add(jb1);
Jup.add(jb2);
JPanel Jcenter=new JPanel();//下边
JButton JB =new JButton("open notepad");
JB.addActionListener( new ButtonEventHandle());
Jcenter.add(JB);
Panel pright=new Panel();//右边
container.add(Jup,BorderLayout.BEFORE_FIRST_LINE);
container.add(Jcenter,BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(500,500);
}
class ButtonEventHandle implements ActionListener{
public void actionPerformed(ActionEvent e)
{
Person p=new Person();
try {
p.fun();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
class Bstudy implements ActionListener{
public void actionPerformed(ActionEvent e)
{
}
}
public static void main(String args[])
{
new System();
}
}
import java.awt.event.*;public class Counters extends Frame{
Panel panel;
TextField tf;
Button b[],add,sub,mul,div,cle,
equ,dot,two,sqr,tsex;
Boolean isDot,operated,equaled;
double storedNumber;
char lastOperator;
public Counters(){
isDot=false;
operated=false;
equaled=false;
storedNumber=0;
lastOperator='?';
panel=new Panel();
tf=new TextField();
b=new Button[10];
for(int i=0;i<10;i++){b[i]=new Button(""+i);}
add=new Button("+");
sub=new Button("-");
mul=new Button("*");
div=new Button("/");
cle=new Button("Cle");
equ=new Button("=");
dot=new Button(".");
two=new Button("N(2)");
sqr=new Button("√");
tsex=new Button("N(16)");
this.add(tf,BorderLayout.NORTH);
this.add(panel,BorderLayout.CENTER);
panel.setLayout(new GridLayout(5,4,10,10));
panel.add(b[1]);
panel.add(b[2]);
panel.add(b[3]);
panel.add(add);
panel.add(b[4]);
panel.add(b[5]);
panel.add(b[6]);
panel.add(sub);
panel.add(b[7]);
panel.add(b[8]);
panel.add(b[9]);
panel.add(mul);
panel.add(b[0]);
panel.add(dot);
panel.add(sqr);
panel.add(div);
panel.add(two);
panel.add(tsex);
panel.add(cle);
panel.add(equ);
this.setTitle("计算器");
this.setSize(250,350);
this.setVisible(true);
for(int i=0;i<10;i++){b[i].addActionListener(new Monitor());}
add.addActionListener(new Monitor());
sub.addActionListener(new Monitor());
mul.addActionListener(new Monitor());
div.addActionListener(new Monitor());
dot.addActionListener(new Monitor());
sqr.addActionListener(new Monitor());
equ.addActionListener(new Monitor());
cle.addActionListener(new Monitor());
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
two.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int temp=Integer.parseInt(tf.getText());
tf.setText(""+Integer.toBinaryString(temp));
}
});
tsex.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
int temp=Integer.parseInt(tf.getText());
tf.setText(""+Integer.toHexString(temp));
}
});
}
class Monitor implements ActionListener{
public void actionPerformed(ActionEvent e){
Button btn=(Button)e.getSource();
if(btn==cle){
tf.setText("0");
isDot=false;
storedNumber=0;
lastOperator='?';
}
else if(btn==equ){
operate('=');
equaled=true;
}
else if(btn==add){
operate('+');
equaled=false;
}
else if(btn==sub){
operate('-');
equaled=false;
}
else if(btn==mul){
operate('*');
equaled=false;
}
else if(btn==div){
operate('/');
equaled=false;
}
else if(btn==sqr){
operate('s');
operate('=');
equaled=true;
}
else{
if(equaled) storedNumber=0;
for(int i=0;i<10;i++)
if(btn==b[i]){
if(tf.getText().equals("0"))
tf.setText(""+i);
else if(!operated)
tf.setText(tf.getText()+i);
else{
tf.setText(""+i);
operated=false;
}
}
if(btn==dot&&!isDot){
tf.setText(tf.getText()+".");
isDot=true;
}
}
}
}
public void operate(char operator){
double currentNumber = Double.valueOf(tf.getText()).doubleValue();
if (lastOperator == '?')
storedNumber = currentNumber;
else if
(lastOperator == '+')
storedNumber += currentNumber;
else if (lastOperator == '-')
storedNumber -= currentNumber;
else if (lastOperator == '*')
storedNumber *= currentNumber;
else if (lastOperator == '/')
storedNumber /= currentNumber;
else if (lastOperator == 's')
storedNumber = Math.sqrt(currentNumber);
else if (lastOperator == '=' && equaled)
storedNumber = currentNumber;
tf.setText("" + storedNumber);
operated = true;
lastOperator = operator;
}
public static void main(String args[]){
new Counters();
}
}