- 1、用java編寫一個畫圖軟體
- 2、java 繪圖程序
- 3、用Java一個簡單的畫圖程序
- 4、用java編寫一個簡單的畫圖程序。不用複雜
package s;//包名
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test extends JFrame {
int x1,y1,x2,y2;public Test(){
setVisible(true);
setSize(300,300) ;
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e){
System.exit(0) ; }});
addMouseListener(
new MouseAdapter() {
public void mousePressed(MouseEvent e){
x1=e.getX();
y1=e.getY();} });
addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e){
x2=e.getX() ;
y2=e.getY() ;
repaint(); }});
}
public void paint(Graphics g)
{
g.drawLine(x1,y1,x2,y2);
x1=x2;
y1=y2;
}
public static void main(String args[])
{
new Test();
}
}
我基於你原來畫圖的方法，添加了事件觸發的命令b[j].setActionCommand(“b” + j);否則你不能在事件響應處理的方法中使用e.getActionCommand()，而且字元串的比較用equals方法比較好。現在可以運行了，你可以看一下：
import java.applet.Applet;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class drawing extends Applet implements ActionListener {
Button b[] = new Button[5];
String fontname = “仿宋_GB2312”;
int style = Font.PLAIN;
int size = 24;
int index = 0;
Font myfont;
public void init() {
setSize(700,700);
myfont = new Font(fontname, style, size);
b[0] = new Button(“扇形”);
b[1] = new Button(“圓形”);
b[2] = new Button(“三角形”);
b[3] = new Button(“長方形”);
b[4] = new Button(“橢圓形”);
for (int j = 0; j b.length; j++) {
b[j].setBounds(10, 10, 50, 20);
b[j].addActionListener(this);
b[j].setActionCommand(“b” + j);
add(b[j]);
}
}
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals(“b0”)) {
index = 0;
repaint();
}
if (e.getActionCommand().equals(“b1”)) {
index = 1;
repaint();
}
if (e.getActionCommand().equals(“b2”)) {
index = 2;
repaint();
}
if (e.getActionCommand().equals(“b3”)) {
index = 3;
repaint();
}
if (e.getActionCommand().equals(“b4”)) {
index = 4;
repaint();
}
}
public void paint(Graphics g) {
switch (index) {
case 0:
g.fillArc(0, 60, 80, 60, 30, 120);
break;
case 1:
g.drawOval( 300, 50, 60, 60);
break;
case 2:
Polygon filledPolygon = new Polygon();
filledPolygon.addPoint(380, 50);
filledPolygon.addPoint(380, 110);
filledPolygon.addPoint(450, 90);
g.drawPolygon(filledPolygon);
break;
case 3:
g.drawRect( 200, 50, 80, 60);
break;
case 4:
g.drawOval(100, 50, 80, 60);
break;
default:
g.fillArc(0, 60, 80, 60, 30, 120);
break;
}
}
/*
* public void paint(Graphics g) { g.fillArc( 0, 60, 80, 60, 30, 120);
* //繪製扇形 g.drawOval( 100, 50, 80, 60); g.drawRect( 200, 50, 80, 60);
* g.drawOval( 300, 50, 60, 60); Polygon filledPolygon=new Polygon();
* filledPolygon.addPoint(380,50); filledPolygon.addPoint(380,110);
* filledPolygon.addPoint(450,90); g.drawPolygon(filledPolygon); }
*/
}
下面是我以前做的小程序，希望能給你點幫助！
package menu;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class DaYin extends JFrame implements ActionListener{
public DaYin() {
Container c=this.getContentPane();
c.setLayout(new BorderLayout());
JMenuBar jmb=new JMenuBar();
JMenu jm=null;
jm=new JMenu(“文件”);
jmb.add(jm);
jm=new JMenu(“編輯”);
jmb.add(jm);
jm=new JMenu(“列印”);
JMenuItem jmi=new JMenuItem(“列印預覽”);
jmi.addActionListener(this);
jm.add(jmi);
jmb.add(jm);
jm=new JMenu(“幫助”);
jmb.add(jm);
this.setJMenuBar(jmb);
this.setSize(1024,768);
this.setVisible(true);
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
}
public static void main(String[] args) {
new DaYin();
}
public void update(Graphics g){
g.setColor(Color.black);
String title[]={“摘要”,”科目”,”子目或戶名”,”借方金額”,”貸方金額”};
String danwei[]={“千”,”百”,”十”,”萬”,”千”,”百”,”十”,”元”,”角”,”分”};
int csx=200;//列印x的初始坐標
int csy=200;//列印y的初始坐標
int x=csx;
int y=csy;
int a=x+20;//列印字體x的初始坐標
int b=y+20;//列印字體y的初始坐標
int row=7;//一共列印出幾條橫線
int cul=5;//一共列印出幾條豎線
int hangju=30;//線與線之間的縱向間距
int lieju=100;//線與線之間的橫向間距
int yy=hangju*row+y;
int c=yy+20;
g.setFont(new Font(“行楷”,Font.TYPE1_FONT,24));
g.drawString(“記 賬 憑 證”, x+160, y-40);//列印出記賬憑證這幾個字
g.drawLine(x+100, y-30, x+340, y-30);//列印出記賬憑證下面的那條線
g.setFont(new Font(“行楷”,Font.TYPE1_FONT,13));
g.drawString(“年 月 日 第_______號”, x+260, y-10);
//g.drawLine(x+430, y-10, x+470, y-10);
for(int i=0;i=row;i++){
g.drawLine(x, y, cul*lieju+x+25, y);//此循環用於畫出表格的行
if(i==0)
y+=hangju*2;
else
y+=hangju;
}
y=csy;
g.drawLine(x+lieju*3, y+hangju, cul*lieju+x, y+hangju);//列印出第一行半的橫線
for(int j=0;j=cul;j++){
g.drawLine(x, y, x, row*hangju+y);//此循環用於畫出表格的列
x+=lieju;
}
x=csx;
for(int z=0;zcul;z++){
g.setColor(Color.red);//設置顏色
g.setFont(new Font(“”,Font.TYPE1_FONT,13));//設置表頭字體
if(z3)
g.drawString(title[z], a, b+hangju/2);
else
g.drawString(title[z], a, b);//為表格添加表頭
a+=lieju;
}//76-89列印出一個表格形狀
int xx=lieju*3+x+10;
for(int v=0;v=9;v++){
g.drawLine(xx, y+hangju, xx, row*hangju+y+hangju);//此循環用於畫出表格的列
g.setFont(new Font(“”,Font.TYPE1_FONT,11));
g.drawString(danwei[v], xx-10, y+hangju+20);//為表格添加表頭
if(v%2==0)
g.setColor(Color.red);//設置顏色
else
g.setColor(Color.BLUE);//設置顏色
xx+=10;
}
for(int n=0;n9;n++){
g.drawLine(xx, y+hangju, xx, row*hangju+y+hangju);//此循環用於畫出表格的列
g.drawString(danwei[n],xx-10, y+hangju+20);//為表格添加表頭
if(n%2==0)
g.setColor(Color.red);//設置顏色
else
g.setColor(Color.BLUE);//設置顏色
xx+=10;
}
g.drawString(danwei[9],xx-10, y+hangju+20);
g.setColor(Color.black);//設置顏色
for(int i=0;i=1;i++){
g.drawLine(x,yy , cul*lieju+x, yy);//此循環用於畫出表格的行
yy+=hangju;
}
yy=hangju*row+y;
for(int j=0;j=3;j++){
g.drawLine(x, yy, x, (row+1)*hangju+y);//此循環用於畫出表格的列
if(j0){
x+=lieju;
}else{
x+=lieju*3;
}
}//112-128列印出表格的最後一行單元格
x=csx;
g.setFont(new Font(“”,Font.TYPE1_FONT,13));
g.drawString(“合 計”,x+60, c);
g.drawString(“會計主管 記賬 出納 審核 制證”, x+30, yy+50);
g.drawLine(cul*lieju+x+25, y, cul*lieju+x+25, (row+1)*hangju+y);//列印出最後一列
g.drawString(“記”,cul*lieju+x+6, y+15);
g.drawString(“賬”, cul*lieju+x+6, y+35);
g.drawString(“√”, cul*lieju+x+6, y+55);//134-136為最後一列寫入字體
g.drawString(“附”,cul*lieju+x+35, y+75);
g.drawString(“件”, cul*lieju+x+35, y+95);
g.drawString(“張”, cul*lieju+x+35, y+175);//134-136為最後一列後寫入字體
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getActionCommand().equals(“列印預覽”)){
this.repaint();
}
}
}
使用drawLine()做了一個記賬憑證。
執行點擊”列印”子菜單”列印預覽”就可顯示出我們所畫的”記賬憑證表”
希望這個小程序能夠給你點靈感
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
//不規則圖形的繪製
public class IrregularShapeDemo extends JFrame {
GeneralPath gPath= new GeneralPath(); //GeneralPath對象實例
Point aPoint;
//構造函數
public IrregularShapeDemo() {
super(“不規則圖形的繪製”); //調用父類構造函數
enableEvents(AWTEvent.MOUSE_EVENT_MASK|AWTEvent.MOUSE_MOTION_EVENT_MASK); //允許事件
setSize(300, 200); //設置窗口尺寸
setVisible(true); //設置窗口可視
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //關閉窗口時退出程序
}
public void paint(Graphics g) { //重載窗口組件的paint()方法
Graphics2D g2D = (Graphics2D)g; //獲取圖形環境
g2D.draw(gPath); //繪製路徑
}
public static void main(String[] args) {
new IrregularShapeDemo();
}
protected void processMouseEvent(MouseEvent e) { //滑鼠事件處理
if(e.getID() == MouseEvent.MOUSE_PRESSED) {
aPoint = e.getPoint(); //得到當前滑鼠點
gPath = new GeneralPath(); //重新實例化GeneralPath對象
gPath.moveTo(aPoint.x,aPoint.y); //設置路徑點
}
}
protected void processMouseMotionEvent(MouseEvent e) { //滑鼠運動事件處理
if(e.getID() == MouseEvent.MOUSE_DRAGGED) {
aPoint = e.getPoint(); //得到當前滑鼠點
gPath.lineTo(aPoint.x, aPoint.y); //設置路徑
gPath.moveTo(aPoint.x, aPoint.y);
repaint(); //重繪組件
}
}
}
原創文章，作者：TPDJ3，如若轉載，請註明出處：https://www.506064.com/zh-tw/n/126967.html
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