主题:求助.修改程序,图形界面问题
public class Form extends JFrame{
public Form(){
super("guen mian ban");
// this.setSize(300,300);
//this.setLocation(100,100);
JPanel jp=new JPanel();
JTextArea ja=new JTextArea(5,5);
JScrollPane jsp=new JScrollPane(ja,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
jp.add(jsp);
setContentPane(jp);
jsp.setPreferredSize(new Dimension(250,250));
}
public static void main(String[]args)
{
Form fm=new Form();
fm.setVisible(true);
}
}
///////下面是运行后出现异常的代码
Exception in thread "main" java.lang.IllegalArgumentException: invalid verticalScrollBarPolicy
at javax.swing.JScrollPane.setVerticalScrollBarPolicy(JScrollPane.java:466)
at javax.swing.JScrollPane.<init>(JScrollPane.java:258)
at Form.Form.<init>(Form.java:26)
at Form.Form.main(Form.java:33)
看不懂,请大家帮忙.
public Form(){
super("guen mian ban");
// this.setSize(300,300);
//this.setLocation(100,100);
JPanel jp=new JPanel();
JTextArea ja=new JTextArea(5,5);
JScrollPane jsp=new JScrollPane(ja,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
jp.add(jsp);
setContentPane(jp);
jsp.setPreferredSize(new Dimension(250,250));
}
public static void main(String[]args)
{
Form fm=new Form();
fm.setVisible(true);
}
}
///////下面是运行后出现异常的代码
Exception in thread "main" java.lang.IllegalArgumentException: invalid verticalScrollBarPolicy
at javax.swing.JScrollPane.setVerticalScrollBarPolicy(JScrollPane.java:466)
at javax.swing.JScrollPane.<init>(JScrollPane.java:258)
at Form.Form.<init>(Form.java:26)
at Form.Form.main(Form.java:33)
看不懂,请大家帮忙.