第21章 Swing

学习 表格设计相关的代码

package twentyone;
import java.awt.*;
import java.awt.event.*;
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableRowSorter;

public class tab extends JFrame{
	public tab(){
		//建立表格
		setTitle("表格");
		setSize(600,600);
		setVisible(true);
		setDefaultCloseOperation(DISPOSE_ON_CLOSE);
		setLayout(null);
		Container c=getContentPane();
		//利用向量 填充内容
		String k[]={"A","B","C","D","E","F","G"};
		Vector<String> l=new Vector<String>();
		for(int i=0;i<k.length;i++){
			l.add(k[i]);
		}
		Vector<Vector<String>> s=new Vector<Vector<String>>();
		for(int i = 1; i <=7; i++){
			Vector<String> h=new Vector<String>();
			for(int j=0;j<k.length;j++){
				h.add(k[j]+i);
			}
			s.add(h);
		}
		//设计表格样式
		final DefaultTableModel dt=new DefaultTableModel(s,l);
		final JTable tab=new JTable(dt);
		tab.setRowSorter(new TableRowSorter<DefaultTableModel>(dt));
		JScrollPane sp=new JScrollPane(tab);
		sp.setBounds(100, 50, 400, 400);
		c.add(sp);
		JTableHeader th=tab.getTableHeader();
		th.setBounds(100, 20, 400, 30);
		c.add(th);
		tab.setRowHeight(30);
		tab.setSelectionMode(1);
		tab.setSelectionBackground(Color.ORANGE);
		tab.setSelectionForeground(Color.BLUE);
		tab.setRowSelectionInterval(2, 5);
		int e=tab.getSelectedRowCount();
		System.out.println(e);
		//添加文本框，显示选中行内容
		final JTextField x=new JTextField();
		final JTextField y=new JTextField();
		JLabel a1=new JLabel("A1:");
		JLabel b1=new JLabel("B1:");
		c.add(x);
		c.add(y);
		c.add(a1);
		c.add(b1);
		x.setBounds(100, 500, 60, 40);
		y.setBounds(200, 500, 60, 40);
		a1.setBounds(70, 500, 20, 40);
		b1.setBounds(170, 500, 20, 40);
		tab.addMouseListener(new MouseAdapter() {
			public void mouseClicked(MouseEvent e){
				int sr=tab.getSelectedRow();
				Object oa=dt.getValueAt(sr, 0);
				Object ob=dt.getValueAt(sr, 1);
				x.setText(oa.toString());
				y.setText(ob.toString());
			}
		});
	//设计添加按钮
	final JButton B1=new JButton("添加");
	c.add(B1);
	B1.setBounds(290, 500, 60, 40);
	B1.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent arg0) {
			String [] rv={x.getText(),y.getText()};
			dt.addRow(rv);
			/*int hh=tab.getRowCount()+1;
			x.setText("A"+hh);
			y.setText("B"+hh);*/
		}
	});
	//设计修改按钮
	final JButton B2=new JButton("修改");
	c.add(B2);
	B2.setBounds(370, 500, 60, 40);
	B2.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent arg0) {
			int sr=tab.getSelectedRow();
			dt.setValueAt(x.getText(), sr, 0);
			dt.setValueAt(y.getText(), sr, 1);
		}
	});
	//设计删除按钮
	final JButton B3=new JButton("删除");
	c.add(B3);
	B3.setBounds(450,500, 60, 40);
	B3.addActionListener(new ActionListener() {
		public void actionPerformed(ActionEvent arg0) {
			int sr=tab.getSelectedRow();
			dt.removeRow(sr);
		}
	});
	}
	
	public static void main(String[] args) {
		new tab();
	}

}

结果： 界面

排序

选中显示

添加功能

修改功能

删除功能