高手请帮我实现一下 《窗口+滚动条》显示缩略图的问题！！付上我的代码

Question

void showmini(String path){
        Show play = new Show();
        JPanel pnlmain = new JPanel();
        pnlmain.setLayout(null);
        JScrollPane js = new JScrollPane(pnlmain);
        js.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);        play.add(js);        File mulu = new File(path);
        String []zhong = mulu.list();
        Vector jihe = new Vector();
        for (int i = 0; i < zhong.length;i++) {
            String bi = zhong[i].substring(zhong[i].lastIndexOf(".")+1);
            if ((bi.equals("JPG")) || (bi.equals("BMP")) ||
                (bi.equals("GIF")) || (bi.equals("jpg")) ||
                (bi.equals("bmp")) || (bi.equals("gif"))) {
                     jihe.add(zhong[i]);
            }
        }        JPanel []fi;
        JLabel []tu;
        JLabel []zi;
        Object []guankan =  jihe.toArray();        for(int i=0,x=20,y=23;i<guankan.length;i++){
            fi = new JPanel[guankan.length];
            tu = new JLabel[guankan.length];
            zi = new JLabel[guankan.length];
            fi[i] = new JPanel();
            fi[i].setLayout(null);
            fi[i].setBounds(x,y,90,90);            pnlmain.add(fi[i]);
            tu[i] = new JLabel();
            ImageIcon ico = new ImageIcon(java.awt.Toolkit.getDefaultToolkit().getImage(path+"\\"+guankan[i].toString()).getScaledInstance(90,70,Image.SCALE_FAST));
            tu[i].setIcon(ico);
            tu[i].setBounds(0,0,90,70);
            fi[i].add(tu[i]);            zi[i] = new JLabel();
            zi[i].setBounds(0,70,90,20);
            zi[i].setText(guankan[i].toString());
            fi[i].add(zi[i]);
            if((i+1)%6==0){
                x=20;y+=120;
            }else{
                x += 120;
            }
        }
        play.setVisible(true);
    }
}
show是1个继承JFrame的类 请指点下滚动条不起作用！！！

Answer 1

setBounds 用 setLocation 和 setPreferredSize代替试一下