标签:edit obj lazy bst seo 实现 jta edr remove
静态数据表格的样子:
package cn.dzz; import javax.swing.*; import java.awt.*; public class JTable { JFrame jFrame = new JFrame("简单表格"); Object[] titleList = {"姓名", "年龄", "性别"}; Object[][] dataList = { {"李清照", 29, "女性"}, {"苏格拉底", 56, "男性"}, {"李白", 35, "男性"}, {"弄玉", 18, "女性"}, {"虎头", 2, "男性"}, }; public void init() { javax.swing.JTable jTable = new javax.swing.JTable(dataList, titleList); jFrame.add(new JScrollPane(jTable)); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.pack(); jFrame.setVisible(true); } public static void main(String[] args) { new JTable().init(); } }
程序效果:
简单的表格提供了一些基础功能:
1、可以选中某一条记录
2、可以对显示的记录的某一个字段进行修改
3、可以对列进行移动
package cn.dzz; import javax.swing.*; import javax.swing.table.TableColumn; import java.awt.*; public class JTable { JFrame jFrame = new JFrame("简单表格"); Object[] titleList = {"姓名", "年龄", "性别"}; Object[][] dataList = { {"李清照", 29, "女性"}, {"苏格拉底", 56, "男性"}, {"李白", 35, "男性"}, {"弄玉", 18, "女性"}, {"虎头", 2, "男性"}, }; public void init() { javax.swing.JTable jTable = new javax.swing.JTable(dataList, titleList); // 默认的选择模式 jTable.getSelectionModel().setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); // 设置列宽 TableColumn jTableColumn1 = jTable.getColumn(titleList[0]); jTableColumn1.setMinWidth(40); TableColumn jTableColumn3 = jTable.getColumn(titleList[2]); jTableColumn3.setMaxWidth(50); jFrame.add(new JScrollPane(jTable)); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.pack(); jFrame.setVisible(true); } public static void main(String[] args) { new JTable().init(); } }
使用TableModel来代替二维数组渲染数据:
可以自定义实现抽象表格模型类,监听获取选中的单元格:
package cn.dzz; import javax.swing.*; import javax.swing.table.AbstractTableModel; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Vector; public class TableModelDemo { JFrame jFrame = new JFrame("tableModel"); Object[] titleList = {"姓名", "年龄", "性别"}; Object[][] dataList = { {"李清照", 29, "女性"}, {"苏格拉底", 56, "男性"}, {"李白", 35, "男性"}, {"弄玉", 18, "女性"}, {"虎头", 2, "男性"}, }; private Vector titleVector = new Vector(); private Vector<Vector> dataVector = new Vector(); public void init() { for (int i = 0; i < titleList.length; i++) { titleVector.add(titleList[i]); } for (int i = 0; i < dataList.length; i++) { Vector t = new Vector(); for (int j = 0; j < dataList[i].length; j++) { t.add(dataList[i][j]); } dataVector.add(t); } // javax.swing.JTable jTable = new javax.swing.JTable(dataVector, titleVector); MyTableModel myTableModel = new MyTableModel(); javax.swing.JTable jTable = new javax.swing.JTable(myTableModel); jFrame.add(new JScrollPane(jTable)); // 选中监听 JButton jButton = new JButton("获取选中的行的数据"); jButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int selectedColumn = jTable.getSelectedColumn(); int selectedRow = jTable.getSelectedRow(); System.out.println("当前选中行的索引 " + selectedRow); System.out.println("当前选中列的索引 " + selectedColumn); Object valueAt = myTableModel.getValueAt(selectedRow, selectedColumn); System.out.println("当前选中行的第一个单元格的内容为:" + valueAt); } }); jFrame.add(jButton, BorderLayout.SOUTH); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.pack(); jFrame.setVisible(true); } public static void main(String[] args) { new TableModelDemo().init(); } private class MyTableModel extends AbstractTableModel { @Override public int getRowCount() { return dataVector.size(); } @Override public int getColumnCount() { return titleVector.size(); } @Override public Object getValueAt(int rowIndex, int columnIndex) { return dataVector.get(rowIndex).get(columnIndex); } @Override public String getColumnName(int column) { return titleVector.get(column).toString(); } @Override public boolean isCellEditable(int rowIndex, int columnIndex) { return true; } } }
Java也提供默认的TableModel可使用,DefaultTableModel
加行,加列,删除行,选中就都有了
package cn.dzz; import javax.swing.*; import javax.swing.table.AbstractTableModel; import javax.swing.table.DefaultTableModel; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Vector; public class TableModelDemo { JFrame jFrame = new JFrame("tableModel"); Object[] titleList = {"姓名", "年龄", "性别"}; Object[][] dataList = { {"李清照", 29, "女性"}, {"苏格拉底", 56, "男性"}, {"李白", 35, "男性"}, {"弄玉", 18, "女性"}, {"虎头", 2, "男性"}, }; private Vector titleVector = new Vector(); private Vector<Vector> dataVector = new Vector(); public void init() { for (int i = 0; i < titleList.length; i++) { titleVector.add(titleList[i]); } for (int i = 0; i < dataList.length; i++) { Vector t = new Vector(); for (int j = 0; j < dataList[i].length; j++) { t.add(dataList[i][j]); } dataVector.add(t); } // javax.swing.JTable jTable = new javax.swing.JTable(dataVector, titleVector); MyTableModel myTableModel = new MyTableModel(); //javax.swing.JTable jTable = new javax.swing.JTable(myTableModel); DefaultTableModel tableModel = new DefaultTableModel(dataVector, titleVector); javax.swing.JTable jTable = new javax.swing.JTable(tableModel); jFrame.add(new JScrollPane(jTable)); // 选中监听 JButton jButton = new JButton("获取选中的行的数据"); jButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int selectedColumn = jTable.getSelectedColumn(); int selectedRow = jTable.getSelectedRow(); System.out.println("当前选中行的索引 " + selectedRow); System.out.println("当前选中列的索引 " + selectedColumn); Object valueAt = myTableModel.getValueAt(selectedRow, selectedColumn); System.out.println("当前选中行的第一个单元格的内容为:" + valueAt); } }); JButton btnForAddNewRow = new JButton("新加一行"); JButton btnForAddNewColumn = new JButton("新加一列"); JButton btnForDelOneRow = new JButton("删除一行"); btnForAddNewRow.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { tableModel.addRow(new Object[]{"柳岩", 18, "女性"}); } }); btnForAddNewColumn.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { tableModel.addColumn("职业"); } }); btnForDelOneRow.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int selectedRow = jTable.getSelectedRow(); tableModel.removeRow(selectedRow); } }); // jFrame.add(jButton, BorderLayout.SOUTH); JPanel jPanel = new JPanel(); jPanel.add(jButton); jPanel.add(btnForAddNewRow); jPanel.add(btnForAddNewColumn); jPanel.add(btnForDelOneRow); jFrame.add(jPanel, BorderLayout.SOUTH); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.pack(); jFrame.setVisible(true); } public static void main(String[] args) { new TableModelDemo().init(); } private class MyTableModel extends AbstractTableModel { @Override public int getRowCount() { return dataVector.size(); } @Override public int getColumnCount() { return titleVector.size(); } @Override public Object getValueAt(int rowIndex, int columnIndex) { return dataVector.get(rowIndex).get(columnIndex); } @Override public String getColumnName(int column) { return titleVector.get(column).toString(); } @Override public boolean isCellEditable(int rowIndex, int columnIndex) { return true; } } }
标签:edit obj lazy bst seo 实现 jta edr remove
原文地址:https://www.cnblogs.com/mindzone/p/14514131.html