java添加事件的几种方式（转载了codebrother的文章，做了稍微的改动）：
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/**
* java事件监听处理——自身类实现actionlistener接口，作为事件监听器
*
* @author codebrother
*/
class eventlistener1 extends jframe implements actionlistener {
private jbutton btblue, btdialog;
public eventlistener1() {
settitle("java gui 事件监听处理");
setbounds(100, 100, 500, 350);
setlayout(new flowlayout());
btblue = new jbutton("蓝色");
btdialog = new jbutton("弹窗");
// 将按钮添加事件监听器
btblue.addactionlistener(this);
btdialog.addactionlistener(this);
add(btblue);
add(btdialog);
setvisible(true);
setdefaultcloseoperation(jframe.exit_on_close);
}
// ***************************事件处理***************************
@override
public void actionperformed(actionevent e) {
if (e.getsource() == btblue) {
container c = getcontentpane();
c.setbackground(color.blue);
}
else if (e.getsource() == btdialog) {
jdialog dialog = new jdialog();
dialog.setbounds(300, 200, 400, 300);
dialog.setvisible(true);
}
}
}
/**
* java事件监听处理——内部类处理
*
* @author codebrother
*/
class eventlistener3 extends jframe {
private jbutton btblue, btdialog;
// 构造方法
public eventlistener3() {
settitle("java gui 事件监听处理");
setbounds(100, 100, 500, 350);
setlayout(new flowlayout());
btblue = new jbutton("蓝色");
btdialog = new jbutton("弹窗");
// 添加事件监听器对象(面向对象思想)
btblue.addactionlistener(new coloreventlistener());
btdialog.addactionlistener(new dialogeventlistener());
add(btblue);
add(btdialog);
setvisible(true);
setdefaultcloseoperation(jframe.exit_on_close);
}
// 内部类coloreventlistener，实现actionlistener接口
class coloreventlistener implements actionlistener {
@override
public void actionperformed(actionevent e) {
container c = getcontentpane();
c.setbackground(color.blue);
}
}
// 内部类dialogeventlistener，实现actionlistener接口
class dialogeventlistener implements actionlistener {
@override
public void actionperformed(actionevent e) {
jdialog dialog = new jdialog();
dialog.setbounds(300, 200, 400, 300);
dialog.setvisible(true);
}
}
}
/**
* java事件监听处理——匿名内部类处理
*
* @author codebrother
*/
class eventlistener2 extends jframe {
private jbutton btblue, btdialog;
public eventlistener2() {
settitle("java gui 事件监听处理");
setbounds(100, 100, 500, 350);
setlayout(new flowlayout());
btblue = new jbutton("蓝色");
btdialog = new jbutton("弹窗");
// 添加事件监听器(此处即为匿名类)
btblue.addactionlistener(new actionlistener() {
// 事件处理
@override
public void actionperformed(actionevent e) {
container c = getcontentpane();
c.setbackground(color.blue);
}
});
// 并添加事件监听器
btdialog.addactionlistener(new actionlistener() {
@override
public void actionperformed(actionevent e) {
jdialog dialog = new jdialog();
dialog.setbounds(300, 200, 400, 300);
dialog.setvisible(true);
}
});
add(btblue);
add(btdialog);
setvisible(true);
setdefaultcloseoperation(jframe.exit_on_close);
}
}
/**
* java事件监听处理——外部类处理
*
* @author codebrother
*/
class eventlistener4 extends jframe {
private jbutton btblue, btdialog;
public eventlistener4() {
settitle("java gui 事件监听处理");
setbounds(100, 100, 500, 350);
setlayout(new flowlayout());
btblue = new jbutton("蓝色");
btdialog = new jbutton("弹窗");
// 将按钮添加事件监听器
btblue.addactionlistener(new coloreventlistener(this));
btdialog.addactionlistener(new dialogeventlistener());
add(btblue);
add(btdialog);
setvisible(true);
setdefaultcloseoperation(jframe.exit_on_close);
}
}
// 外部类coloreventlistener，实现actionlistener接口
class coloreventlistener implements actionlistener {
private eventlistener4 el;
coloreventlistener(eventlistener4 el) {
this.el = el;
}
@override
public void actionperformed(actionevent e) {
container c = el.getcontentpane();
c.setbackground(color.blue);
}
}
// 外部类dialogeventlistener，实现actionlistener接口
class dialogeventlistener implements actionlistener {
@override
public void actionperformed(actionevent e) {
jdialog dialog = new jdialog();
dialog.setbounds(300, 200, 400, 300);
dialog.setvisible(true);
}
}
public class actionlistenertest
{
public static void main(string args[])
{
new eventlistener2();
}
}
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