为什么我的JTable标题不显示

Question

我的JTable似乎有点困难，因为它没有显示标题; 。 “” 姓名”， “ID”， “民族”， “语言”， “条件”， “沃德”， “食物选择”， “血型”， “过敏”

这里是我的代码：

package searchengine; 

import java.awt.BorderLayout; 
import java.awt.EventQueue; 

import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.ListSelectionModel; 
import javax.swing.border.EmptyBorder; 
import javax.swing.table.TableModel; 
import javax.swing.table.TableRowSorter; 
import javax.swing.JList; 
import javax.swing.table.DefaultTableModel; 
import java.awt.Color; 
import java.awt.Container; 
import java.awt.Font; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 

import javax.swing.JButton; 

public class SearchResults extends JFrame { 

private JPanel contentPane; 
private JTable table; 
private JTable SearchTable; 
private Container frame; 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       SearchResults frame = new SearchResults(); 
       frame.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

/** 
* Create the frame. 
*/ 
public SearchResults() { 
    setTitle("Search Results"); 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setBounds(100, 100, 750, 830); 
    contentPane = new JPanel(); 
    contentPane.setBackground(Color.LIGHT_GRAY); 
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
    setContentPane(contentPane); 
    contentPane.setLayout(null); 

    SearchTable = new JTable(); 
    SearchTable.setFont(new Font("Tahoma", Font.PLAIN, 14)); 
    SearchTable.setBackground(Color.WHITE); 
    SearchTable.setModel(new DefaultTableModel(
     new Object[][] { 
      {"Mary Johnson", "31195585", "USA", "English/Spanish", "Tubercolosis", "12A", "N.A.", "A", "Peanuts"}, 
      {"Peng Ding", "E67112009", "China", "Mandarin", "Pneumonia", "55E", "N.A.", "B", "Dairy"}, 
      {"J\u00E9an-Claude", "01DA67411", "France", "French", "Stroke", "14R", "Vegeterian", "B", "Seafood"}, 
      {"James Raj", "F6700241", "India", "Tamil", "3rd Degree Burns", "66F", "Vegeterian", "O+", "Eggs"}, 
      {"Harry Kretschmann", "H784510073", "Germany", "German", "3rd Degree Burns", "4B", "Vegeterian", "O+", "N.A."}, 
      {"John Lee", "E6784511G", "Singapore", "English/Mandarin", "Pneumonia", "22C", "N.A.", "O-", "N.A."}, 
      {"Benny Ho", "A56773455", "Malaysia", "Mandarin", "Cancer", "6D", "Meaterian", "AB", "Seafood"}, 
      {"Peter Abbot", "N6793561", "Austrailia", "English", "Low Blood Pressure", "8G", "Meaterian", "B", "Wheat"}, 
     }, 
     new String[] { 
      "Name", "ID", "Nationality", "Language", "Condition", "Ward", "Food Preference", "Blood Type", "Allergy" 
     } 
    ) { 
     /** 
     * 
     */ 
     private static final long serialVersionUID = 1L; 
     Class[] columnTypes = new Class[] { 
      String.class, String.class, String.class, String.class, String.class, String.class, String.class, String.class, String.class 
     }; 
     public Class getColumnClass(int columnIndex) { 
      return columnTypes[columnIndex]; 
     } 
     boolean[] columnEditables = new boolean[] { 
      false, false, false, false, false, false, false, false, false 
     }; 
     public boolean isCellEditable(int row, int column) { 
      return columnEditables[column]; 
     } 
    }); 
    SearchTable.setCellSelectionEnabled(true); 
    SearchTable.setColumnSelectionAllowed(true); 
    SearchTable.setBounds(0, 194, 728, 128); 
    contentPane.add(SearchTable); 

    final JButton btnBack = new JButton("Back to Search"); 
    btnBack.setBounds(225, 418, 267, 112); 
    contentPane.add(btnBack); 
    btnBack.addActionListener(new ActionListener() 
    { 
     public void actionPerformed(ActionEvent e) { 
      this.setVisible(false); 
      new Search().setVisible(true); // Main Form to show after the Login Form.. 
     } 

     private void setVisible(boolean b) { 
      // TODO Auto-generated method stub 

     } 
    }); 


} 
} 

Answer 1

JTable中需要一个 “JScrollPane的” 以正确显示。

可以固定只需更换这

SearchTable.setBounds(0, 194, 728, 128); 
contentPane.add(SearchTable); 

随着

JScrollPane sp = new JScrollPane(SearchTable); 
sp.setSize(new Dimension(728, 128)); 
sp.setLocation(0, 194); 
contentPane.add(sp);