導入Java . awt . *;
導入Java . awt . event . *;
導入javax . swing . *;
公共類測試擴展JFrame {
int x1,y1,x2,y2;公共測試(){
set visible(true);
setSize(300,300);
addWindowListener(new window adapter(){
public void window closing(window event e){
system . exit(0);}});
addMouseListener(
新鼠標適配器(){
public void mouse pressed(mouse event e){
x 1 = e . getx();
y 1 = e . gety();} });
addMouseMotionListener(新的MouseMotionAdapter() {
public void mouse dragged(mouse event e){
x2 = e . getx();
y2 = e . gety();
repaint();}});
}
公共空白油漆(圖形g)
{
g .畫線(x1,y1,x2,y2);
x 1 = x2;
y 1 = y2;
}
公共靜態void main(String args[])
{
新測試();
}
}