import java.io.File;
import java.awt.*;import javax.swing.*;
import java.applet.*;
public class FileDemo { public static void mani(String [] args)
{
JFrame w1=new JFrame("Big");
w1.setSize(200,200);
w1.setVisible(true);
Graphics g=w1.getGraphics();
File f1=new File("/java/COPYRIC");
String a=f1.getName();
g.drawString(a, 20, 20);
}
}import java.awt.*;
import java.io.*;
import java.applet.*;
public class AppletDemo extends Applet {
public static void paint(Graphics g,String a)
{
g.drawString(a,20,20);
}
}
[email protected]<[email protected]> 19:36:12
oh,so easy这是在分别在两个文件的类,我原来是想把字符串a写到窗体上,但为什么没有看到a呢
import java.awt.*;import javax.swing.*;
import java.applet.*;
public class FileDemo { public static void mani(String [] args)
{
JFrame w1=new JFrame("Big");
w1.setSize(200,200);
w1.setVisible(true);
Graphics g=w1.getGraphics();
File f1=new File("/java/COPYRIC");
String a=f1.getName();
g.drawString(a, 20, 20);
}
}import java.awt.*;
import java.io.*;
import java.applet.*;
public class AppletDemo extends Applet {
public static void paint(Graphics g,String a)
{
g.drawString(a,20,20);
}
}
[email protected]<[email protected]> 19:36:12
oh,so easy这是在分别在两个文件的类,我原来是想把字符串a写到窗体上,但为什么没有看到a呢
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货