addActionListener(this) 中的this问题public class JP extends JFrame implements ActionListener{JPanel panel1=new JPanel();.panel2.add(A=new JButton("7"));.A.addActionListener(this);.}1.这个this是调用当前对象? 2.如果我不想用“this”
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 00:57:44
![addActionListener(this) 中的this问题public class JP extends JFrame implements ActionListener{JPanel panel1=new JPanel();.panel2.add(A=new JButton(](/uploads/image/z/11611456-16-6.jpg?t=addActionListener%28this%29+%E4%B8%AD%E7%9A%84this%E9%97%AE%E9%A2%98public+class+JP+extends+JFrame+implements+ActionListener%7BJPanel+panel1%3Dnew+JPanel%28%29%3B.panel2.add%28A%3Dnew+JButton%28%227%22%29%29%3B.A.addActionListener%28this%29%3B.%7D1.%E8%BF%99%E4%B8%AAthis%E6%98%AF%E8%B0%83%E7%94%A8%E5%BD%93%E5%89%8D%E5%AF%B9%E8%B1%A1%3F+2.%E5%A6%82%E6%9E%9C%E6%88%91%E4%B8%8D%E6%83%B3%E7%94%A8%E2%80%9Cthis%E2%80%9D)
addActionListener(this) 中的this问题public class JP extends JFrame implements ActionListener{JPanel panel1=new JPanel();.panel2.add(A=new JButton("7"));.A.addActionListener(this);.}1.这个this是调用当前对象? 2.如果我不想用“this”
addActionListener(this) 中的this问题
public class JP extends JFrame implements ActionListener{
JPanel panel1=new JPanel();
.
panel2.add(A=new JButton("7"));
.
A.addActionListener(this);
.
}
1.这个this是调用当前对象?
2.如果我不想用“this” 可以换成什么?(这个是为了更深入的了解this,请仔细回答,谢谢)
addActionListener(this) 中的this问题public class JP extends JFrame implements ActionListener{JPanel panel1=new JPanel();.panel2.add(A=new JButton("7"));.A.addActionListener(this);.}1.这个this是调用当前对象? 2.如果我不想用“this”
this就是指的对象本身嘛,换成A试试
addActionListener(this) 中的this问题public class JP extends JFrame implements ActionListener{JPanel panel1=new JPanel();.panel2.add(A=new JButton(7));.A.addActionListener(this);.}1.这个this是调用当前对象? 2.如果我不想用“this”
()()()th()() ()()th()() ()()th()() ()()()th()() ()()()th()() ()()th()() 填写字母,成为单词.
button.addActionListener(this)中的this是啥意思,是指button本身还是该代码所在类,能用其他等效吗?
用th组英语单词( )( )( )th( )( )( )( )th( )( )( )( )th( )( )( )( )th( )
( )( )th( )英语单词
10th
m( )( )th
TH是什么意思?
TH是什么意思
( ) ( ) ( )th( ) ( )填空
4TH
4th 5th 6th 7th 8th 9th 10th 11th hhh
15th是什么意思?th是什么意思
在横线上添适当的字母,组成单词---th----th----th-----th---th--th-
()()()th()() ()()th()() ()() th()() ()()()th ()()()th ()()th() 在括号里填入字母成为单词
填上英语字母,使每一横行都组成单词()()()th()()()()th()()()()th()()()()()th()()()th()()th()
带th的单词有哪些?如下: ***th** **th** **th** ***th ***th **th*“*”就是一个字母!可以填什么呀!
英文日期缩写 这样对?1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th ; 11th 12th 13th 14th 15th 16th 17th1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th ; 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th ; 21st 22nd 23rd 24th 25th 26th 27th 28th 29t