Question

the constructor....is undefined错误怎么解决？

public class mytry2d2 extends JFrame{
public mytry2d2() {
.....
}
public void showSatBrowserInternalFrame(){
JInternalFrame iframe = new JSatBrowserInternalFrame(this, this);//这个有错误，显示The constructor JSatBrowserInternalFrame(mytry2d2, mytry2d2) is undefined

iframe.setSize(261,450);
iframe.setLocation(5,5);

iframe.addInternalFrameListener(this);//这显示的错误是The method addInternalFrameListener(InternalFrameListener) in the type JInternalFrame is not applicable for the arguments (mytry2d2)

iframe.setVisible(true);
mainDesktopPane.add(iframe);
try
{
iframe.setSelected(true);
}
catch (java.beans.PropertyVetoException e)
{}
}

}

问题是方法public JSatBrowserInternalFrame(java.awt.Frame parent, JSatTrak app){
........
}
已经在另一个JSatBrowserInternalFrame类里面定义好了，为什么不能直接在这个类里用呢？

Answer 1

public JSatBrowserInternalFrame(java.awt.Frame parent, JSatTrak app)这个方法有2个参数，而你调用时只有前一个参数，所以错误了。