java里如何画一个点
解决方案 »
- .c的文件 通过java程序调用TCC编译 java拦截System.out.println() 如何实现??
- jtable删除多行出现错误
- 请教 java 方法问题
- jdbc直连sqlserver问题~~!!
- synchronized初学问题 感兴趣的看下 分不多!!
- 谁能贴出关于对"数字"进行格式化处理的例子!
- Java中有没有日期加减的函数?
- tomcat是不是免费的呀?
- Exception in thread "main" java.lang.NoClassDefFoundError:HelloApplet/html?
- 关于linux上tar包的问题
- 用socket接受的文件不能删除~求助
- java连接SQLServer 2000数据库出现这样的错误,应如何配置和修正?
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.util.Random;
import java.applet.Applet;
public class Graph {/* public void init(){
Draw Dpanel=new Draw();
Dpanel.setBackground(Color.white);
}
*/
public static void main(String[] args) {
JFrame GraphWin=new JFrame("计算机科学与技术");
GraphWin.setSize(600,480);
GraphWin.setLocation(100,100);
JMenuBar Bar = new JMenuBar();
JMenu[] Menu=new JMenu[5];
Menu[0]=new JMenu("画点");
Menu[1]=new JMenu("直线");
Menu[2]=new JMenu("矩形");
Menu[3]=new JMenu("圆行");
Menu[4]=new JMenu("椭圆");
Bar.setBackground(Color.LIGHT_GRAY);
for(int i=0;i<5;i++){
Bar.add(Menu[i]);
Menu[i].setFont(new Font("宋体",0,12));
} GraphWin.setJMenuBar(Bar);
GraphWin.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Draw Dpanel=new Draw();
Dpanel.setBackground(Color.white);
GraphWin.getContentPane().add(Dpanel);
GraphWin.setVisible(true);
}}class Draw extends JPanel{
int x;
int y;
Draw(){
setBackground(Color.white);
}
}
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GridLayout;import javax.swing.*;public class TestGUI extends JFrame {
public TestGUI() {
this.setBounds(300, 300, 300, 300);
Container c = this.getContentPane(); c.add(new MyPanel());
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
new TestGUI();
} private class MyPanel extends JPanel {
public void paint(Graphics g) {
g.drawOval(100, 100, 1, 1);
}
}
}
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=sample";
Connection con=DriverManager.getConnection(url,"sa","password");如果你用的数据源 那么
String url="jdbc:odbc:sample";
Connection con=DriverManager.getConnection(url,"sa","password");