嗨,我已经创建了一个Jtable,可以让它显示在我的框架上而不是在我的JFrame上的JPanel上 . 我似乎无法改变
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.;
import java.util.ArrayList;
import java.util.Comparator;
import javax.swing.;
import javax.swing.table.;
public class Main
{
DefaultTableModel table_model;
String[][] addressData = new String[10][5];
JPanel panel;
JFrame frame;
JButton loadData;
int count,index,row =0;
String thisLine;
ArrayList People = new ArrayList();
public Main()
{
//Creating JFrame and setting properties
frame = new JFrame();
frame.setResizable(false);
frame.setTitle("Address Book");
frame.setSize(800,600);
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
//Creating JPanel and setting properties
panel = new JPanel();
panel.setLayout(null);
panel.setBackground(new Color(77,81,84));
//Setting the table and Scroll Bars
this.table_model = new DefaultTableModel(addressData, new String[]{"First Name", "Surname", "Home Number", "Mobile Number", "Address", "Postcode"});
JTable table = new JTable(this.table_model);
table.setBounds(130, 40, 200, 200);
panel.add(new JScrollPane(table, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS));
//Load Data button, reading file in and adding data to ArrayList then Array of Arrays
loadData = new JButton("Load File");
loadData.setBounds(10, 10, 100, 20);
loadData.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
BufferedReader reader = new BufferedReader(new FileReader("file/address.buab"));
while ((thisLine = reader.readLine()) !=null)
{
if (row >= 4)
{
index++;
row = 0;
People.add(thisLine);
addressData[index][row] = People.get(count);
count++;
row++;
}
else
{
People.add(thisLine);
addressData[index][row] = People.get(count);
count++;
row++;
}
}
reader.close();
}
catch (IOException ex)
{
System.err.println("Input Exception, Check address.buab File");
}
}
});
panel.add(loadData);
//Auto sort on table fields
TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(this.table_model);
sorter.setComparator(1, new Comparator<Integer>()
{
public int compare(Integer o1, Integer o2)
{
return o1.compareTo(o2);
}
public boolean equals(Object obj)
{
return obj.equals(this);
}
});
table.setRowSorter(sorter);
frame.getContentPane().add(panel);
frame.setVisible(true);
}
public static void main(String[] args)
{
new Main();
}
}
关于我如何设置表格可以在我的JPanel上显示的任何想法
2 回答
一个疯狂的猜测:
试试这个:
然后:
您需要使用特定的布局管理器创建
JPanel
,然后添加具有适当约束的组件(JTable
和JButton
),以使它们出现在面板的正确区域中 . 目前您正在将面板的布局管理器设置为null
,这几乎肯定是不正确的 . 您可能想查看Using Layout Managers教程 .要考虑的一个简单布局管理器是
BorderLayout
. 例如: