public class Hello extends javax.swing.JComponent
{
public static void main(String[] args)
{
javax.swing.JFrame f=new javax.swing.JFrame("Hello,Java!");
f.setSize(300,300);
f.getContentPane().add(new Hello());
f.setVisible(true);
}
public void paintComponent(javax.awt.Graphics g)
{
g.drawString("Hello,Java!",125,95);
}
} 我编译是出现提示信息:Package javax.awt does not exist
public void paintComponent(javax.awt.Graphics g)
∧
是怎么回事??
{
public static void main(String[] args)
{
javax.swing.JFrame f=new javax.swing.JFrame("Hello,Java!");
f.setSize(300,300);
f.getContentPane().add(new Hello());
f.setVisible(true);
}
public void paintComponent(javax.awt.Graphics g)
{
g.drawString("Hello,Java!",125,95);
}
} 我编译是出现提示信息:Package javax.awt does not exist
public void paintComponent(javax.awt.Graphics g)
∧
是怎么回事??
{
public static void main(String[] args)
{
javax.swing.JFrame f=new javax.swing.JFrame("Hello,Java!");
f.setSize(300,300);
f.getContentPane().add(new Hello());
f.setVisible(true);
}
public void paintComponent(java.awt.Graphics g)
{
g.drawString("Hello,Java!",125,95);
}
}
自己去找出不同.........就能改正你的问题了!
人家是javax.swing.JComponent如此引用地。嘿嘿