java编程显示表格_吴裕雄--天生自然JAVA图形界面编程学习笔记：表格
import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import javax.swing.JTable ;
import javax.swing.JScrollPane ;
import javax.swing.JFrame ;
public class JTableDemo01{
public static void main(String args[]){
JFrame frame = new JFrame("Welcome To MLDN") ;
String[] titles = {"姓名","年龄","性别","数学成绩","英语成绩","总分","是否及格"} ;
Object [][] userInfo = {
{"李兴华",30,"男",89,97,186,true} ,
{"李康",23,"女",90,93,183,false}
} ;// 定义数据
JTable table = new JTable(userInfo,titles) ;// 建立表格
JScrollPane scr = new JScrollPane(table) ;
frame.add(scr) ;
frame.setSize(370,90) ;
frame.setVisible(true) ;
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(1) ;
}
})
}
}
import java.awt.BorderLayout ;
import java.awt.event.WindowAdapter ;
import java.awt.event.WindowEvent ;
import javax.swing.JTable ;
import javax.swing.JScrollPane ;
import javax.swing.JFrame ;
import javax.swing.JPanel ;
import javax.swing.DefaultCellEditor ;
import javax.swing.JComboBox ;
import javax.swing.table.AbstractTableModel ;
class DefaultTable extends AbstractTableModel{
private String[] titles = {"姓名","年龄","性别","数学成绩","英语成绩","总分","是否及格"} ;
private Object [][] userInfo = {
{"李兴华",30,"男",89,97,186,true} ,
{"李康",23,"女",90,93,183,false}
} ;// 定义数据
public int getColumnCount(){// 取得列的数量
return this.titles.length ;
}
public int getRowCount(){// 取得行的数量
return this.userInfo.length ;
}
public Object getValueAt(int rowIndex, int columnIndex){
return this.userInfo[rowIndex][columnIndex] ;
}
public String getColumnName(int columnIndex){
return this.titles[columnIndex] ;
}
public Class> getColumnClass(int columnIndex) {// 得到指定列的类型
return this.getValueAt(0,columnIndex).getClass() ;
}
public boolean isCellEditable(int rowIndex, int columnIndex){// 所有内容都可以编辑
return true ;
}
public void setValueAt(Object aValue, int rowIndex, int columnIndex){
this.userInfo[rowIndex][columnIndex] = aValue ;
}
}
class TableColumnModelDemo{
private JFrame frame = new JFrame("Welcome To MLDN") ;
private JTable table = null ;
private DefaultTable defaultTable = new DefaultTable() ;// TableModel
private JComboBox sexList = new JComboBox() ;
public TableColumnModelDemo(){
this.table = new JTable(this.defaultTable) ;
this.sexList.addItem("男") ;
this.sexList.addItem("女") ;
// 以下拉列表框的形式显示
this.table.getColumnModel().getColumn(2).setCellEditor(new DefaultCellEditor(this.sexList)) ;
JScrollPane scr = new JScrollPane(this.table) ;
JPanel toolBar = new JPanel() ;
frame.add(toolBar,BorderLayout.NORTH) ;// 加入组件
frame.add(scr,BorderLayout.CENTER) ;// 加入组件
frame.setSize(370,90) ;
frame.setVisible(true) ;
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(1) ;
}
}) ;
}
}
public class JTableDemo02{
public static void main(String args[]){
new TableColumnModelDemo() ;
}
}
import java.awt.BorderLayout ;
import java.awt.event.WindowAdapter ;
import java.awt.event.ActionListener ;
import java.awt.event.WindowEvent ;
import java.awt.event.ActionEvent ;
import javax.swing.JTable ;
import javax.swing.JButton ;
import javax.swing.JScrollPane ;
import javax.swing.JFrame ;
import javax.swing.JPanel ;
import javax.swing.DefaultCellEditor ;
import javax.swing.JComboBox ;
import javax.swing.table.DefaultTableModel ;
import javax.swing.table.TableColumnModel ;
import javax.swing.table.TableColumn ;
class ChangeTable implements ActionListener{// 通过按钮实现动态表格
private JFrame frame = new JFrame("Welcome To MLDN") ;
private JTable table = null ;
private DefaultTableModel tableModel ;// TableModel
private String[] titles = {"姓名","年龄","性别","数学成绩","英语成绩","总分","是否及格"} ;
private Object [][] userInfo = {
{"李兴华",30,"男",89,97,186,true} ,
{"李康",23,"女",90,93,183,false}
} ;// 定义数据
private JButton addRowBtn = new JButton("增加行") ; // 定义按钮
private JButton removeRowBtn = new JButton("删除行") ; // 定义按钮
private JButton addColBtn = new JButton("增加列") ; // 定义按钮
private JButton removeColBtn = new JButton("删除列") ; // 定义按钮
public ChangeTable(){
this.tableModel = new DefaultTableModel(this.userInfo,this.titles) ;
this.table = new JTable(this.tableModel) ;
JScrollPane scr = new JScrollPane(this.table) ;
JPanel toolBar = new JPanel() ;
toolBar.add(this.addRowBtn) ;
toolBar.add(this.removeRowBtn) ;
toolBar.add(this.addColBtn) ;
toolBar.add(this.removeColBtn) ;
frame.add(toolBar,BorderLayout.NORTH) ;// 加入组件
frame.add(scr,BorderLayout.CENTER) ;// 加入组件
frame.setSize(370,160) ;
frame.setVisible(true) ;
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(1) ;
}
}) ;
this.addRowBtn.addActionListener(this) ;
this.removeRowBtn.addActionListener(this) ;
this.addColBtn.addActionListener(this) ;
this.removeColBtn.addActionListener(this) ;
}
public void actionPerformed(ActionEvent e){
if(e.getSource() == this.addColBtn){// 增加列
this.tableModel.addColumn("新增列") ;
}
if(e.getSource() == this.addRowBtn){
this.tableModel.addRow(new Object[]{}) ;
}
if(e.getSource()==this.removeColBtn){
int colCount = this.tableModel.getColumnCount() - 1 ;// 取得列的数量
if(colCount>=0){
// 如果要想删除，则必须找到TableColumnModel
TableColumnModel columMode = this.table.getColumnModel() ;
TableColumn taleColumn = columMode.getColumn(colCount) ;
columMode.removeColumn(taleColumn) ;// 删除指定的列
this.tableModel.setColumnCount(colCount) ;
}
}
if(e.getSource()==this.removeRowBtn){
int rowCount = this.tableModel.getRowCount() - 1 ;
if(rowCount>=0){// 判断是否还有行可以删除
this.tableModel.removeRow(rowCount) ;
this.tableModel.setRowCount(rowCount) ;// 设置新的行数
}
}
}
}
public class JTableDemo03{
public static void main(String args[]){
new ChangeTable() ;
}
}