java JTable 更改列字体
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JTable change Column Font
提问by Frakcool
I'm making a table where I want to make the first column with a higher Font Size.
我正在制作一个表格，我想用更大的字体大小制作第一列。
For example in column 0 I want Font size of 30 and on columns 1-3 y want Font size of 13.
例如，在第 0 列中，我希望字体大小为 30，而在第 1-3 列中，我希望字体大小为 13。
Here's my code
这是我的代码
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.*;
public class kanji_list extends JFrame {
kanji_list(){
JTable table = new JTable();
JScrollPane scroll = new JScrollPane();
Image icon = Toolkit.getDefaultToolkit().getImage("JLPT.jpg");
ImageIcon ima = new ImageIcon("JLPT.jpg");
DefaultTableModel model = new DefaultTableModel(get_data(), get_header());
table = new JTable(model){
public boolean isCellEditable(int rowIndex, int vColIndex){
return false;
}
};
JTableHeader th = table.getTableHeader();
TableColumnModel tcm = th.getColumnModel();
TableColumn column = null;
table.setFont(new Font("Microsoft JhengHei", Font.BOLD, 13));
for (int i = 0; i < 4; i++) {
column = table.getColumnModel().getColumn(i);
DefaultTableCellRenderer tcr = new DefaultTableCellRenderer();
tcr.setHorizontalAlignment(SwingConstants.CENTER);
column.setCellRenderer(tcr);
if (i==0) {
column.setPreferredWidth(50);
}
else{
if(i==1){
column.setPreferredWidth(175);
}
else{
if(i==2){
column.setPreferredWidth(200);
}
else{
column.setPreferredWidth(875);
}
}
}
}
table.setRowHeight(table.getRowHeight()+30);
table.setModel(model);
scroll.add(table);
this.add(scroll);
this.setTitle("Katakana");
this.setSize(1350, 700);
this.setIconImage(icon);
this.setVisible(true);
this.setLocationRelativeTo(null);
scroll.setViewportView(table);
}
Object [][]get_data(){
Object data[][] = new Object[][]{
{"\u4e00", "Uno, 1", "ICHI, ITSU", "hito-, hitotsu"},
{"\u4e8c", "Dos, 2", "NI, JI", "futa, futatsu, futatabi"},
{"\u4e09", "Tres, 3", "SAN, JOU", "mi, mitsu, mittsu"},
{"\u99c5", "Estación", "EKI", ""}
};
return data;
}
String []get_header(){
String header [] = new String[]{"KANJI", "SIGNIFICADO", "LECTURA ON", "LECTURA KUN"};
return header;
}
}
This is a Japanese learning system, and Kanjis on unicode on 1st column aren't visible at all with my 13 size font, but if I make all the table on a higher size, all the other columns get bigger and it doesn't looks fine.
这是一个日语学习系统，使用我的 13 号字体根本看不到第一列 unicode 上的汉字，但是如果我将所有表格都设置为更大的尺寸，所有其他列都会变大并且看起来不美好的。
回答by kleopatra
In core JTable you basically need a custom renderer which sets the Font to something different from the table's font, f.i. in a subclass of DefaultTableCellRenderer. Note that setting the font on DefaultTableCellRenderer once after instantiation won't work because it's reset on each call to getTableCellRendererComponent.
在核心 JTable 中，您基本上需要一个自定义渲染器，它将字体设置为与表格字体不同的字体，fi 在 DefaultTableCellRenderer 的子类中。请注意，在实例化后在 DefaultTableCellRenderer 上设置一次字体将不起作用，因为它在每次调用 getTableCellRendererComponent 时都会重置。
JTable table = new JTable(new AncientSwingTeam());
// the default renderer uses the table's font,
// so set it as appropriate
table.setFont(fontToUseForAllColumnsExceptFirst);
// a custom renderer which uses a special font
DefaultTableCellRenderer r = new DefaultTableCellRenderer() {
Font font = fontToUseForFirstColumn;
@Override
public Component getTableCellRendererComponent(JTable table,
Object value, boolean isSelected, boolean hasFocus,
int row, int column) {
super.getTableCellRendererComponent(table, value, isSelected, hasFocus,
row, column);
setFont(font);
return this;
}
};
// doesn't work because the default renderer's font is reset
// to the table's font always
// r.setFont(font);
// set the custom renderer for first column
table.getColumnModel().getColumn(0).setCellRenderer(r);
An alternative is the renderer decoration approach, supported in the SwingX project (biased me can't resist :-) Then the above would be a two-liner (assuming table is of type JXTable):
另一种选择是渲染器装饰方法，在 SwingX 项目中支持（偏向我无法抗拒:-) 那么上面的将是一个两行（假设表是 JXTable 类型）：
Highlighter hl = new FontHighlighter(font);
table.getColumnExt(0).setHighlighter(hl);
