JAVA的画图小程序

微信公开课小程序热门讨论「JAVA的画图小程序」最新回复-importjava.awt.*;importjava.awt.event.*;importjava.util.*;importjavax.swing.*;classMyLine{privateintx1,x2,y1,y2;publicMyLine(intx1,intx2,inty1,inty2){this.x1=x1;this.x2=x2;this.y1=y1;this.y2=y2;}publicvoiddrawMe(Graphicsg){g.drawLine(x1,y1,x2,y2);g.drawString(起始坐标：+newString(x1+,+y1),x1,y1);}}publicclassDrawLineextendsFrame{Vectorv=newVector();publicstaticvoidmain(String[]args){DrawLinedl=newDrawLine();dl.init();}publicvoidpaint(Graphicsg){g.setColor(Color.BLUE);Enumerationen=v.elements();while(en.hasMoreElements()){MyLinem=(MyLine)en.nextElement();m.drawMe(g);}}publicvoidinit(){setSize(300,300);setVisible(true);addMouseListener(newMouseAdapter(){intx1,x2,y1,y2;publicvoidmousePressed(MouseEvente){x1=e.getX();y1=e.getY();}publicvoidmouseReleased(MouseEvente){x2=e.getX();y2=e.getY();Graphicsg=e.getComponent().getGraphics();g.setColor(Color.BLUE);g.drawLine(x1,y1,x2,y2);g.drawString(newString(起始点坐标：+x1+,+y1),x1,y1);v.add(newMyLine(x1,x2,y1,y2));//herepayattention}});addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){((Window)e.getSource()).dispose();System.exit(0);}});}}
importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;publicclassTestextendsJFrame{intx1,y1,x2,y2;publicTest(){setVisible(true);setSize(300,300); addWindowListener(newWindowAdapter(){ publicvoidwindowClosing(WindowEvente){System.exit(0);}});addMouseListener(newMouseAdapter(){publicvoidmousePressed(MouseEvente){x1=e.getX(); y1=e.getY();}});addMouseMotionListener(newMouseMotionAdapter(){publicvoidmouseDragged(MouseEvente){x2=e.getX();y2=e.getY(); repaint();  }});}publicvoidpaint(Graphicsg){g.drawLine(x1,y1,x2,y2);x1=x2;y1=y2;}publicstaticvoidmain(Stringargs[]){newTest();}}程序只能实现鼠标画线方面的功能!其他方面有待实现. 更多有关「JAVA的画图小程序」的疑问请扫码关注微信公开课+小程序！