package shoufei;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import com.borland.jbcl.layout.*;
import javax.swing.event.*;
import java.awt.Window;

public class jiaofeiFrame extends JInternalFrame {
static int frameNo=1;
static final int xOffset=50,yOffset=30;

public jiaofeiFrame() {
super("缴费界面"+(frameNo++),true,true,true,true);
setSize(600,500);
setLocation(xOffset*frameNo,yOffset*frameNo);
try {
jbInit();
}
catch(Exception e) {
e.printStackTrace();
}

}

private void jbInit() throws Exception {
jPanel1.setLayout(xYLayout1);
jButton1.setFont(new java.awt.Font("Dialog", 0, 18));
jButton1.setText("确 定");
jButton1.addActionListener(new jiaofeiFrame_jButton1_actionAdapter(this));
jButton2.setText("重 置");
jButton2.addActionListener(new jiaofeiFrame_jButton2_actionAdapter(this)
{public void actionPerformed(ActionEvent e) {
jButton2_actionPerformed(e);}});
jButton2.setFont(new java.awt.Font("Dialog", 0, 18));
this.setFont(new java.awt.Font("Dialog", 0, 18));

}
JPanel jPanel1 = new JPanel();
XYLayout xYLayout1 = new XYLayout();
JButton jButton1 = new JButton();
JButton jButton2 = new JButton();

void jButton2_actionPerformed(ActionEvent e) {
AboutDialog aboutDialog = new AboutDialog(this,"guanyu",false);
Dimension dlgSize = new Dimension(300,225);
Dimension frmSize=getSize();
Point loc=getLocation();
aboutDialog.setLocation((frmSize.width -dlgSize.width)/ 2+loc.x,(frmSize.height-dlgSize.height)/2+loc.y);
aboutDialog.setModal(true);
aboutDialog.setSize(dlgSize);
aboutDialog.show();

}

class jiaofeiFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
jiaofeiFrame adaptee;

jiaofeiFrame_jButton2_actionAdapter(jiaofeiFrame adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton2_actionPerformed(e);
}
}

AboutDialog aboutDialog = new AboutDialog(this,"guanyu",false);
Dimension dlgSize = new Dimension(300,225);
Dimension frmSize=getSize();
Point loc=getLocation();
aboutDialog.setLocation((frmSize.width -dlgSize.width)/ 2+loc.x,(frmSize.height-dlgSize.height)/2+loc.y);
aboutDialog.setModal(true);
aboutDialog.setSize(dlgSize);
aboutDialog.show();
这块是调用一个对话框的

AboutDialog 是你自己的类吗？

shi a

没把它的代码贴出来啊
是编译时出错还是运行时出错阿？
是什么错误阿？
有什么错误信息阿？

package shoufei;

import java.awt.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.awt.event.*;

import java.io.*;
import java.net.*;

public class AboutDialog extends JDialog {
JPanel panel1 = new JPanel();
XYLayout xYLayout1 = new XYLayout();
JButton jButton1 = new JButton();

public AboutDialog(Frame frame, String title, boolean modal) {
super(frame, title, modal);
try {
jbInit();
pack();
}
catch(Exception ex) {
ex.printStackTrace();
}
}

public AboutDialog() {
this(null, "", false);
}
private void jbInit() throws Exception {
panel1.setLayout(xYLayout1);
this.getContentPane().setLayout(null);
this.setTitle("Sample Help Window");
panel1.setBounds(new Rectangle(0, 0, 400, 300));
jButton1.setText("jButton1");
jButton1.addActionListener(new AboutDialog_jButton1_actionAdapter(this));
getContentPane().add(panel1, null);
panel1.add(jButton1, new XYConstraints(120, 157, 101, 24));
}

void jButton1_actionPerformed(ActionEvent e) {
this.dispose();
}
}

class AboutDialog_jButton1_actionAdapter implements java.awt.event.ActionListener {
AboutDialog adaptee;

AboutDialog_jButton1_actionAdapter(AboutDialog adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.jButton1_actionPerformed(e);
}
}
是编译时出错
错误信息是cannot resolve symbol: constructor AboutDialog(shoufei.jiaofeiFrame,java.lang.String,boolean)in class shoufei.AboutDialog

是你的构造函数有问题 应该是里面的哪个this
看下面的例子
import java.awt.*;
import javax.swing.*;
public class Ai extends JInternalFrame{
public Ai(Frame frame)
{
}
public static void main(String[] arg)
{

JInternalFrame jf=new JInternalFrame();
Ai a=new Ai(jf) ;

}
}

和你的错误是一样的

偶刚学了10多天,你能具体的给个答案么?谢谢了!(偶很菜啊)

AboutDialog aboutDialog = new AboutDialog(this,"guanyu",false);

你这里传进去的this的引用是指向JInternalFrame的,
但是你定义AboutDialog的时候,它的第一个参数指向的引用应该是Frame
两者没有什么继承关系.你的参数传错了