import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTable;
public class TableTest extends JFrame {private JTable table = null;private JScrollPane js = null;Object[][] data = {new Object[]{"xxx","男"}};Object[] columnIndex = {"姓名","性别"};public TableTest(){table = new JTable(data,columnIndex);js = new JScrollPane();js.add(table);this.pack();this.setVisible(true);}public static void main(String[] args) {TableTest tt = new TableTest();}}
什么都显示不出来啊

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
public class TableTest extends JFrame {
private JTable table = null;
private JScrollPane js = null;
Object[][] data = {new Object[]{"xxx","男"}};
Object[] columnIndex = {"姓名","性别"};
public TableTest(){
table = new JTable(data,columnIndex);
js = new JScrollPane();js.add(table);
this.pack();
this.setVisible(true);
}
public static void main(String[] args) {
TableTest tt = new TableTest();}
}

来个大神帮忙看下呗