JAVA记事本的源代码

我给你如下：/*

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* WriteBoard.java

*

* Created on 2006年12月19日, 下午7:26

*/

/**

*

* @author LecH.giF

*/

import java.awt.datatransfer.*;

import java.awt.event.*;

import java.awt.*;

import java.io.*;

import java.awt.FileDialog;

public class WriteBoard extends java.awt.Frame {

Clipboard clipboard =null;

FileDialog fc = new FileDialog(this);

/** Creates new form WriteBoard */

public WriteBoard() {

clipboard = getToolkit().getSystemClipboard();

initComponents();

}

/** This method is called from within the constructor to

* initialize the form.

* WARNING: Do NOT modify this code. The content of this method is

* always regenerated by the Form Editor.

*/

// editor-fold defaultstate="collapsed" desc=" Generated Code "

private void initComponents() {

textArea1 = new java.awt.TextArea();

menuBar1 = new java.awt.MenuBar();

menu1 = new java.awt.Menu();

menuItem1 = new java.awt.MenuItem();

menuItem2 = new java.awt.MenuItem();

menuItem3 = new java.awt.MenuItem();

menuItem4 = new java.awt.MenuItem();

menuItem5 = new java.awt.MenuItem();

menu2 = new java.awt.Menu();

menuItem6 = new java.awt.MenuItem();

menuItem7 = new java.awt.MenuItem();

menuItem8 = new java.awt.MenuItem();

setTitle("WriteBoard");

addWindowListener(new java.awt.event.WindowAdapter() {

public void windowClosing(java.awt.event.WindowEvent evt) {

exitForm(evt);

}

});

add(textArea1, java.awt.BorderLayout.CENTER);

menu1.setLabel("Menu");

menuItem1.setLabel("\u65b0\u5efa");

menuItem1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

newText(evt);

}

});

menu1.add(menuItem1);

menuItem2.setLabel("\u6253\u5f00");

menuItem2.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

open(evt);

}

});

menu1.add(menuItem2);

menuItem3.setLabel("\u4fdd\u5b58");

menuItem3.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

menuItem3ActionPerformed(evt);

}

});

menu1.add(menuItem3);

menuItem4.setLabel("\u53e6\u5b58\u4e3a");

menuItem4.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

menuItem4ActionPerformed(evt);

}

});

menu1.add(menuItem4);

menuItem5.setLabel("\u9000\u51fa");

menuItem5.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

exit(evt);

}

});

menu1.add(menuItem5);

menuBar1.add(menu1);

menu2.setLabel("\u7f16\u8f91");

menuItem6.setLabel("\u526a\u5207");

menuItem6.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

menuItem6ActionPerformed(evt);

}

});

menu2.add(menuItem6);

menuItem7.setLabel("\u590d\u5236");

menuItem7.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

menuItem7ActionPerformed(evt);

}

});

menu2.add(menuItem7);

menuItem8.setLabel("\u7c98\u8d34");

menuItem8.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

menuItem8ActionPerformed(evt);

}

});

menu2.add(menuItem8);

menuBar1.add(menu2);

setMenuBar(menuBar1);

pack();

}// /editor-fold

private void menuItem4ActionPerformed(java.awt.event.ActionEvent evt) {

fc.show();

if(fc.getFile()!=null){

File file = new File(fc.getFile());

try {

PrintWriter pw = new PrintWriter(file);

pw.print(textArea1.getText());

pw.flush();

pw.close();

} catch (FileNotFoundException ex) {

ex.printStackTrace();

}

}

else{

return;

}

}

private void menuItem3ActionPerformed(java.awt.event.ActionEvent evt) {

fc.show();

if(fc.getFile()!=null){

File file = new File(fc.getFile());

try {

PrintWriter pw = new PrintWriter(file);

pw.print(textArea1.getText());

pw.flush();

pw.close();

} catch (FileNotFoundException ex) {

ex.printStackTrace();

}

}

else{

return;

}

}

private void menuItem8ActionPerformed(java.awt.event.ActionEvent evt) {

Transferable contents = clipboard.getContents(this);

DataFlavor flavor = DataFlavor.stringFlavor;

if(contents.isDataFlavorSupported(flavor))

try{

String str;

str=(String)contents.getTransferData(flavor);

textArea1.append(str);

}catch(Exception e){}

}

private void menuItem7ActionPerformed(java.awt.event.ActionEvent evt) {

String temp = this.textArea1.getSelectedText();

StringSelection text = new StringSelection(temp);

clipboard.setContents(text,null);

}

private void menuItem6ActionPerformed(java.awt.event.ActionEvent evt) {

String temp = this.textArea1.getSelectedText();

StringSelection text = new StringSelection(temp);

clipboard.setContents(text,null);

int start = textArea1.getSelectionStart();

int end = textArea1.getSelectionEnd();

textArea1.replaceRange("",start,end);

}

private void open(java.awt.event.ActionEvent evt) {

fc.show();

if(fc.getFile()!=null){

File file = new File(fc.getFile());

try {

FileReader fr = new FileReader(file);

BufferedReader br = new BufferedReader(fr);

String s;

try {

while((s= br.readLine())!=null){

textArea1.append(s+"\n");

}

fr.close();

br.close();

} catch (IOException ex) {

ex.printStackTrace();

}

} catch (FileNotFoundException ex) {

ex.printStackTrace();

}

}

else{

return;

}

}

private void newText(java.awt.event.ActionEvent evt) {

this.textArea1.setText("");

}

private void exit(java.awt.event.ActionEvent evt) {

System.exit(0);

}

/** Exit the Application */

private void exitForm(java.awt.event.WindowEvent evt) {

System.exit(0);

}

/**

* @param args the command line arguments

*/

public static void main(String args[]) {

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new WriteBoard().setVisible(true);

}

});

}

// Variables declaration - do not modify

private java.awt.Menu menu1;

private java.awt.Menu menu2;

private java.awt.MenuBar menuBar1;

private java.awt.MenuItem menuItem1;

private java.awt.MenuItem menuItem2;

private java.awt.MenuItem menuItem3;

private java.awt.MenuItem menuItem4;

private java.awt.MenuItem menuItem5;

private java.awt.MenuItem menuItem6;

private java.awt.MenuItem menuItem7;

private java.awt.MenuItem menuItem8;

private java.awt.TextArea textArea1;

// End of variables declaration

}

什么是java的source code

如果你用开发工具,比如eclipse,那么鼠标滑过代码时,会有一个层显示出来,是一些对代码的介绍.

如果是系统定义的类型,你按住ctrl

点击这厅纳个文字,会跳派差到

所谓源代码(source

code)了.

而默认,鼠标滑过,按下shift,

也会有源代码提示的.

前提是你设置好了source

code

的路径扮羡没.

求JAVA源代码

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class GradeStatistic {

public static void main(String[] args) {

GradeStatistic gs = new GradeStatistic();

ListMark list = new ArrayListMark();

float sum = 0;

while(true){

Scanner sc = new Scanner(System.in);

System.out.print("Please input student name: ");

String name = sc.nextLine();

if(name.equals("备差end")){

break;

}

System.out.print("Please input student score: ");

float score = sc.nextFloat();

sum += score;

list.add(gs.new Mark(name, score));

}

float max = list.get(0).getScore();

float min = list.get(0).getScore();

for(Mark mark: list){

if(max mark.getScore()){

max = mark.getScore();

}

if(min mark.getScore()){

min = mark.getScore();

}

}

float average = sum / list.size();

System.out.println("好瞎Average is: " + average);

System.out.println("Max is: " + max);

System.out.println("Min is: "仿袜皮 + min);

}

private class Mark{

private String name;

private float score;

public Mark(String name, float score){

this.name = name;

this.score = score;

}

public String getName() {

return name;

}

public float getScore() {

return score;

}

}

}

----------------------

Please input student name: Zhang san

Please input student score: 100

Please input student name: Li Si

Please input student score: 91

Please input student name: Ec

Please input student score: 35

Please input student name: ma qi

Please input student score: 67

Please input student name: end

Average is: 73.25

Max is: 100.0

Min is: 35.0

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