如何在JTable之后添加JButton [英] How to add JButton after a JTable
本文介绍了如何在JTable之后添加JButton的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个JTable，其中包含一些类似于SSCCE的数据:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.*;
import java.awt.Color;
class kanji{
public static void main(String args[]){
JFrame frame = new JFrame("Kanji");
JPanel pane = new JPanel();
JTable table = new JTable();
pane.setLayout(new BorderLayout());
JButton agreg = new JButton("Agregar");
DefaultTableModel model = new DefaultTableModel(get_data(), get_header());
JFrame hk = new JFrame("Historial de Significados");
Image icon = Toolkit.getDefaultToolkit().getImage("JLPT.jpg");
ImageIcon ima = new ImageIcon("JLPT.jpg");
table = new JTable(model){
@Override
public boolean isCellEditable(int row, int col){
switch(col){
case 0:
return false;
case 1:
return false;
case 2:
return true;
default:
return false;
}
}
@Override
public Class getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return String.class;
case 2:
return Boolean.class;
default:
return Boolean.class;
}
}
};
DefaultTableCellRenderer r = new DefaultTableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
setForeground(Color.blue);
setHorizontalAlignment(JLabel.CENTER);
setFont(new Font("Microsoft JhengHei", Font.BOLD, 50));
return this;
}
};
DefaultTableCellRenderer r2 = new DefaultTableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
setHorizontalAlignment(JLabel.LEFT);
setFont(new Font("Microsoft JhengHei", Font.BOLD, 13));
return this;
}
};
table.getColumnModel().getColumn(0).setCellRenderer(r);
table.getColumnModel().getColumn(1).setCellRenderer(r2);
TableColumn column = null;
for (int i = 0; i < 3; i++) {
column = table.getColumnModel().getColumn(i);
if (i==0) {
column.setMaxWidth(80);
column.setMinWidth(80);
}
else{
if(i==1){
column.setPreferredWidth(470);
}
else{
column.setMaxWidth(50);
column.setMinWidth(50);
}
}
}
table.setRowHeight(table.getRowHeight()+70);
table.setModel(model);
table.getTableHeader().setReorderingAllowed(false);
JScrollPane scroll = new JScrollPane(table);
pane.add(scroll, BorderLayout.CENTER);
pane.add(agreg, BorderLayout.SOUTH);
frame.add(pane);
frame.setTitle("Historial de Significados");
frame.setSize(1350, 700);
frame.setIconImage(icon);
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
scroll.setViewportView(table);
}
public static Object [][]get_data(){
Object data[][] = new Object[][]{
{"\u4e00", "Uno, 1", true},
{"\u4e01", "Uno, 1", true},
{"\u4e02", "Uno, 1", true},
{"\u4e03", "Uno, 1", true},
{"\u4e04", "Uno, 1", true},
{"\u4e05", "Uno, 1", true},
{"\u4e06", "Uno, 1", true},
{"\u4e07", "Uno, 1", true},
{"\u4e08", "Uno, 1", true},
{"\u4e09", "Uno, 1", true}
};
return data;
}
public static String []get_header(){
String header [] = new String[]{"KANJI", "SIGNIFICADO", "Agregar"};
return header;
}
}
但是我想在创建JTable之后添加3个JButton，我想拥有一个不占用所有JFrame大小的JTable，在我的代码中我得到一个Button，但是我希望可以设置按钮界限. /p>
我尝试添加一个JPanel，然后尝试使用"setPreferredSize"进行尝试，其中JScrollPane不起作用，我的意思是我没有出现，所以看不到所有表内容.并且我还尝试了对我不起作用的"setSize".
也许我必须再做一个小组讨论，希望您能帮助我解决这个问题.
我猜一个图像说了1000多个字，所以:
这就是我所拥有和拥有的以及我想要拥有的东西
所以用通俗的英语来说，我只想知道如何渲染表格并在渲染表格之后在底部添加按钮(但是我不希望按钮具有所有的框架宽度，我希望它们远离表格，而不是一起使用，并可以更改其大小和位置.
解决方案
private void createUI() {
JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());
final JTable table = new JTable(10, 4);
JPanel btnPnl = new JPanel(new BorderLayout());
JPanel topBtnPnl = new JPanel(new FlowLayout(FlowLayout.TRAILING));
JPanel bottombtnPnl = new JPanel(new FlowLayout(FlowLayout.CENTER));
topBtnPnl.add(new JButton("Select All"));
bottombtnPnl.add(new JButton("Cancel"));
bottombtnPnl.add(new JButton("Add Selected"));
btnPnl.add(topBtnPnl, BorderLayout.NORTH);
btnPnl.add(bottombtnPnl, BorderLayout.CENTER);
table.getTableHeader().setReorderingAllowed(false);
frame.add(table.getTableHeader(), BorderLayout.NORTH);
frame.add(table, BorderLayout.CENTER);
frame.add(btnPnl, BorderLayout.SOUTH);
frame.setTitle("JTable Example.");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
I have a JTable with some data like this SSCCE:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.*;
import java.awt.Color;
class kanji{
public static void main(String args[]){
JFrame frame = new JFrame("Kanji");
JPanel pane = new JPanel();
JTable table = new JTable();
pane.setLayout(new BorderLayout());
JButton agreg = new JButton("Agregar");
DefaultTableModel model = new DefaultTableModel(get_data(), get_header());
JFrame hk = new JFrame("Historial de Significados");
Image icon = Toolkit.getDefaultToolkit().getImage("JLPT.jpg");
ImageIcon ima = new ImageIcon("JLPT.jpg");
table = new JTable(model){
@Override
public boolean isCellEditable(int row, int col){
switch(col){
case 0:
return false;
case 1:
return false;
case 2:
return true;
default:
return false;
}
}
@Override
public Class getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return String.class;
case 2:
return Boolean.class;
default:
return Boolean.class;
}
}
};
DefaultTableCellRenderer r = new DefaultTableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
setForeground(Color.blue);
setHorizontalAlignment(JLabel.CENTER);
setFont(new Font("Microsoft JhengHei", Font.BOLD, 50));
return this;
}
};
DefaultTableCellRenderer r2 = new DefaultTableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
setHorizontalAlignment(JLabel.LEFT);
setFont(new Font("Microsoft JhengHei", Font.BOLD, 13));
return this;
}
};
table.getColumnModel().getColumn(0).setCellRenderer(r);
table.getColumnModel().getColumn(1).setCellRenderer(r2);
TableColumn column = null;
for (int i = 0; i < 3; i++) {
column = table.getColumnModel().getColumn(i);
if (i==0) {
column.setMaxWidth(80);
column.setMinWidth(80);
}
else{
if(i==1){
column.setPreferredWidth(470);
}
else{
column.setMaxWidth(50);
column.setMinWidth(50);
}
}
}
table.setRowHeight(table.getRowHeight()+70);
table.setModel(model);
table.getTableHeader().setReorderingAllowed(false);
JScrollPane scroll = new JScrollPane(table);
pane.add(scroll, BorderLayout.CENTER);
pane.add(agreg, BorderLayout.SOUTH);
frame.add(pane);
frame.setTitle("Historial de Significados");
frame.setSize(1350, 700);
frame.setIconImage(icon);
frame.setVisible(true);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
scroll.setViewportView(table);
}
public static Object [][]get_data(){
Object data[][] = new Object[][]{
{"\u4e00", "Uno, 1", true},
{"\u4e01", "Uno, 1", true},
{"\u4e02", "Uno, 1", true},
{"\u4e03", "Uno, 1", true},
{"\u4e04", "Uno, 1", true},
{"\u4e05", "Uno, 1", true},
{"\u4e06", "Uno, 1", true},
{"\u4e07", "Uno, 1", true},
{"\u4e08", "Uno, 1", true},
{"\u4e09", "Uno, 1", true}
};
return data;
}
public static String []get_header(){
String header [] = new String[]{"KANJI", "SIGNIFICADO", "Agregar"};
return header;
}
}
But I want to add 3 JButton after JTable is created, I want to have a JTable that don't take all JFrame size, in my code I get a Button but I want to have the possibility to set buttons bounds.
I've tried adding a JPanel and with another try with "setPreferredSize" where JScrollPane don't work, I mean I doesn't appear so I can't see all table content; and I also tried with "setSize" that doesn't work for me.
Maybe I have to make a second panel or something like that, I hope you can help me solving this issue.
I guess an Image says more than 1,000 words, so:
This is what I get and have and what I want to have
So in plain english, all I want to know is how to render table and add button at the bottom after rendered table (but I don't want buttons to have all the frame width, I want them away from table, not together as I have them and with the possibility to change their size and position).
解决方案
private void createUI() {
JFrame frame = new JFrame();
frame.setLayout(new BorderLayout());
final JTable table = new JTable(10, 4);
JPanel btnPnl = new JPanel(new BorderLayout());
JPanel topBtnPnl = new JPanel(new FlowLayout(FlowLayout.TRAILING));
JPanel bottombtnPnl = new JPanel(new FlowLayout(FlowLayout.CENTER));
topBtnPnl.add(new JButton("Select All"));
bottombtnPnl.add(new JButton("Cancel"));
bottombtnPnl.add(new JButton("Add Selected"));
btnPnl.add(topBtnPnl, BorderLayout.NORTH);
btnPnl.add(bottombtnPnl, BorderLayout.CENTER);
table.getTableHeader().setReorderingAllowed(false);
frame.add(table.getTableHeader(), BorderLayout.NORTH);
frame.add(table, BorderLayout.CENTER);
frame.add(btnPnl, BorderLayout.SOUTH);
frame.setTitle("JTable Example.");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
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