import javax.swing.*;
import java.awt.*;
public class mainFrame extends JFrame
{
public mainFrame(String sTitle,int iWidth,int iHeight)
{
Dimension dim=Toolkit.getDefaultToolkit().getScreenSize();
ImageIcon ii=new ImageIcon("./images/middle.gif");
setTitle(sTitle);
setIconImage(ii.getImages());
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(iWidth,iHeight);
int w=getSize.width();
int h=getSize.height();
System.out.println("窗口宽:"+w+"窗口高:"+h);
int x=(dim.width-w)/2;
int y=(dim.height-h)/2;
setLocation(x,y);
setVisible(true);
}
public static void main(String args[])
{
JFrame.setDefaultLookAndFeelDecorated(true);
mainFrame mF=new mainFrame("main Frame demo",400,300);
}
}
这个程序 我编译后 提示 10 13 14 行找不到符号?为什么呢,是import的问题?或classpath?
import java.awt.*;
public class mainFrame extends JFrame
{
public mainFrame(String sTitle,int iWidth,int iHeight)
{
Dimension dim=Toolkit.getDefaultToolkit().getScreenSize();
ImageIcon ii=new ImageIcon("./images/middle.gif");
setTitle(sTitle);
setIconImage(ii.getImages());
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(iWidth,iHeight);
int w=getSize.width();
int h=getSize.height();
System.out.println("窗口宽:"+w+"窗口高:"+h);
int x=(dim.width-w)/2;
int y=(dim.height-h)/2;
setLocation(x,y);
setVisible(true);
}
public static void main(String args[])
{
JFrame.setDefaultLookAndFeelDecorated(true);
mainFrame mF=new mainFrame("main Frame demo",400,300);
}
}
这个程序 我编译后 提示 10 13 14 行找不到符号?为什么呢,是import的问题?或classpath?
import javax.swing.*;
import java.awt.*;
public class MainFrame extends JFrame{
public MainFrame(String sTitle,int iWidth,int iHeight)
{
Dimension dim=Toolkit.getDefaultToolkit().getScreenSize();
ImageIcon ii=new ImageIcon( "./images/middle.gif ");
setTitle(sTitle);
setIconImage(ii.getImage());
setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
setSize(iWidth,iHeight);
int w=getWidth();
int h=getHeight();
System.out.println( "窗口宽: "+w+" " + "窗口高: "+h);
int x=(dim.width-w)/2;
int y=(dim.height-h)/2;
setLocation(x,y);
setVisible(true);
} /**
* @param args
*/
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
MainFrame mF=new MainFrame( "main Frame demo ",400,300);
// TODO 自动生成方法存根 }}
//这样应该对了哦,你试试看吧。
int h=getSize().height;
根本就没有getImages()这个方法
把getImages()后面的s去掉
改成getImage()二:
把 int w=getSize.width();
int h=getSize.height();
这两句改成:
int w=getSize().width;
int h=getSize().height;
这样就不会报错了