JTable的表头内容居中和单元格内容居中

//设置表数据居中显示

DefaultTableCellRenderer cr = new DefaultTableCellRenderer();
cr.setHorizontalAlignment(JLabel.CENTER);
table.setDefaultRenderer(Object.class, cr);

//设置表头居中显示
DefaultTableCellHeaderRenderer hr = new DefaultTableCellHeaderRenderer();
hr.setHorizontalAlignment(JLabel.CENTER);
table.getTableHeader().setDefaultRenderer(hr);

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.SwingConstants;

import javax.swing.table.DefaultTableCellRenderer;

public class TestTable extends JFrame {

private static final long serialVersionUID = 1L;

TestTable() {

Object[] header = { "name", "age" };

Object[][] data = { { "zhang", 11 }, { "wang", 22 } };

JTable t = new JTable(data, header);

t.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);

t.getColumnModel().getColumn(1).setPreferredWidth(100);

DefaultTableCellRenderer render = new DefaultTableCellRenderer();

render.setHorizontalAlignment(SwingConstants.CENTER);

t.getColumn("age").setCellRenderer(render);

JScrollPane js = new JScrollPane(t);

getContentPane().add(js);

pack();

}

public static void main(String[] args) {

TestTable t = new TestTable();

t.setVisible(true);

}

}

//设置表头内容居中
((DefaultTableCellRenderer)table.getTableHeader().getDefaultRenderer()).setHorizontalAlignment(JLabel.CENTER);

//设置单元格内容居中
DefaultTableCellRenderer render = new DefaultTableCellRenderer();
render.setHorizontalAlignment(SwingConstants.CENTER);

table.getTableHeader().getColumnModel().getColumn(0).setCellRenderer(render);