「java手写设置」java手写单例模式

博主：adminadmin 2023-03-20 18:22:07 374

今天给各位分享java手写设置的知识，其中也会对java手写单例模式进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！

本文目录一览：

我的世界JAVA版怎么手写key？

ascend - 把自己提升到上一个平台 bind {命令关键字} - 设置一键命令 clear - 清空控... s - Same as /set search - 搜索物品名称 set - 在这世界标记一个路径点 setjump [JUMP...

java程序，手写板在一个页面签名，而无法保存签名笔迹，有谁可以解决，谢谢。

可以的，汉王手写板一般都有亲笔书信功能，我都用了好长时间了！你安装成功后，单击电脑右下角“笔”的图标，能够找到亲笔信得功能设置。

怎么手写一个java程序,手动加入jar,并插入数据到数据库？不用eclipse或MyEclipse自动加入jar库文件

利用管道机制，先设置路径，然后再设置一些命令，下面有个列子，希望你能看懂

set classpath=%JAVA_HOME%\bin;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;C:\oracle\ora92\bin;C:\Program Files\Oracle\jre\1.1.8\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\jakarta-tomcat-5.0.28\common\lib\log4j-1.2.8.jar;C:\jakarta-tomcat-5.0.28\common\lib\classes12.jar;

javac tclsend.java

java tclsend

怎么用Java制作手写板，如果能提供代码更好

做什么事都要学会GOOGLE。

搜索JAVA记事本。

你新建一个类叫TEST。

import java.awt.Color;

import java.awt.FileDialog;

import java.awt.Font;

import java.awt.Menu;

import java.awt.MenuBar;

import java.awt.MenuItem;

import java.awt.TextArea;

import java.awt.Toolkit;

import java.awt.datatransfer.Clipboard;

import java.awt.datatransfer.DataFlavor;

import java.awt.datatransfer.StringSelection;

import java.awt.datatransfer.Transferable;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import javax.swing.JFrame;

public class Test extends JFrame implements ActionListener {

/**

* Method main

*

*

* @param args

*

*/

MenuBar menuBar = new MenuBar();

Menu file = new Menu("File"), edit = new Menu("Edit"), help = new Menu(

"Help");

MenuItem[] menuItem = { new MenuItem("New"), new MenuItem("Open"),

new MenuItem("Save"), new MenuItem("Exit"),

new MenuItem("Select All"), new MenuItem("Copy"),

new MenuItem("Cut"), new MenuItem("Paste"), new MenuItem("Help") };

TextArea textArea = new TextArea();

String fileName = "NoName";

Toolkit toolKit = Toolkit.getDefaultToolkit();

Clipboard clipboard = toolKit.getSystemClipboard();

// opne and close message dialogs

private FileDialog openFileDialog = new FileDialog(this, "Open File",

FileDialog.LOAD);

private FileDialog saveFileDialog = new FileDialog(this, "Save File",

FileDialog.SAVE);

public static void main(String[] args) {

// TODO: Add your code here

Test MyEdit = new Test();

MyEdit.show();

}

/**

* Method MiniEdit

*

*

*/

public Test() {

// TODO: Add your code here

setTitle("MiniEdit");

setFont(new Font("Times New Roman", Font.PLAIN, 15));

setBackground(Color.white);

setSize(500, 500);

setMenuBar(menuBar);

menuBar.add(file);

menuBar.add(edit);

menuBar.add(help);

for (int i = 0; i 4; i++) {

file.add(menuItem[i]);

edit.add(menuItem[i + 4]);

}

help.add(menuItem[8]);

add(textArea);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

e.getWindow().dispose();

System.exit(0);

}

});

// add actionListener

for (int i = 0; i menuItem.length; i++) {

menuItem[i].addActionListener(this);

}

}

/**

* Method actionPerformed

*

*

* @param e

*

*/

public void actionPerformed(ActionEvent e) {

// TODO: Add your code here

Object eventSource = e.getSource();

if (eventSource == menuItem[0])// newItem

{

textArea.setText("");

}

else if (eventSource == menuItem[1])// OpenItem

{

openFileDialog.show();

fileName = openFileDialog.getDirectory() + openFileDialog.getFile();

if (fileName != null) {

openFile(fileName);

}

}

else if (eventSource == menuItem[2])// SaveItem

{

saveFileDialog.show();

fileName = saveFileDialog.getDirectory() + saveFileDialog.getFile();

if (fileName != null) {

writeFile(fileName);

}

}

else if (eventSource == menuItem[3])// exitItem

{

System.exit(0);

}

else if (eventSource == menuItem[4])// Select All

{

textArea.selectAll();

} else if (eventSource == menuItem[5])// copy

{

String text = textArea.getSelectedText();

StringSelection selection = new StringSelection(text);

clipboard.setContents(selection, null);

}

else if (eventSource == menuItem[6])// cut

{

String text = textArea.getSelectedText();

StringSelection selection = new StringSelection(text);

clipboard.setContents(selection, null);

textArea.replaceText("", textArea.getSelectionStart(), textArea

.getSelectionEnd());

}

else if (eventSource == menuItem[7])// Paste

{

Transferable contents = clipboard.getContents(this);

if (contents == null)

return;

String text;

text = "";

try {

text = (String) contents

.getTransferData(DataFlavor.stringFlavor);

} catch (Exception ex) {

}

textArea.replaceText(text, textArea.getSelectionStart(), textArea

.getSelectionEnd());

} else if (eventSource == menuItem[8]) {

// JOptionPane.showMessageDialog(null,"This is a MiniEdit.");

}

}

// Read file

public void openFile(String fileName) {

try {

File file = new File(fileName);

FileReader readIn = new FileReader(file);

int size = (int) file.length();

int charsRead = 0;

char[] content = new char[size];

while (readIn.ready())

charsRead += readIn.read(content, charsRead, size - charsRead);

readIn.close();

textArea.setText(new String(content, 0, charsRead));

} catch (Exception e) {

System.out.println("Error opening file!");

}

}

// write file

public void writeFile(String fileName) {

try {

File file = new File(fileName);

FileWriter write = new FileWriter(file);

write.write(textArea.getText());

write.close();

} catch (Exception e) {

System.out.println("Error closing file!");

}

}

}

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