JTable常见用法细则+设置某列可编辑+滚动表格
JTable常见用法细则
JTable是Swing编程中很常用的控件,这里总结了一些常用方法以备查阅.欢迎补充,转载请注明作者与出处. 一. 创建表格控件的各种方式: 1) 调用无参构造函数.
JTable table = new JTable();2) 以表头和表数据创建表格.
3) 以表头和表数据创建表格,并且让表单元格不可改.
二.对表格列的控制 1) 设置列不可随容器组件大小变化自动调整宽度.
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);2) 限制某列的宽度.
TableColumn firsetColumn = table.getColumnModel().getColumn(0);
firsetColumn.setPreferredWidth(30);
firsetColumn.setMaxWidth(30);
firsetColumn.setMinWidth(30);3) 设置当前列数.
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
int count=5;
tableModel.setColumnCount(count);4) 取得表格列数
int cols = table.getColumnCount();5) 添加列
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
tableModel.addColumn("新列名");6) 删除列
table.removeColumn(table.getColumnModel().getColumn(columnIndex));// columnIndex是要删除的列序号三.对表格行的控制 1) 设置行高
table.setRowHeight(20);2) 设置当前航数
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
int n=5;
tableModel.setRowCount(n);3) 取得表格行数
int rows = table.getRowCount();4) 添加表格行
5) 删除表格行
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
model.removeRow(rowIndex);// rowIndex是要删除的行序号四.存取表格单元格的数据 1) 取单元格数据
DefaultTableModel tableModel = (DefaultTableModel) table.getModel();
String cellValue=(String) tableModel.getValueAt(row, column);// 取单元格数据,row是行号,column是列号2) 填充数据到表格. 注:数据是Member类型的链表,Member类如下:
填充数据的代码:
2) 取得表格中的数据
五.取得用户所选的行 1) 取得用户所选的单行
2) 取得用户所选的多行
六.添加表格的事件处理
例子：
import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.GridLayout;
import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.DefaultTableModel;
public class PTest{ public PTest() { String head[] = {"学号", "姓名", "成绩（请双击以下空格输入）"}; Icon bug = new ImageIcon(getClass().getResource("789.jpg")); JLabel a = new JLabel (bug);
JTable a1 = new JTable (20,3); a1.setRowHeight (30);//设置高度 a1.setDragEnabled(true); //设置第一、二列不可可编辑 DefaultTableModel tableModel = new DefaultTableModel(20,3){ boolean[] editables = {false, false, true}; public boolean isCellEditable(int row, int col) { return editables[col]; }
//使table不可编辑的代码（放在model中有效）全部不可编辑 // public boolean isCellEditable(int row, int column) // { // return false; // } }; a1.setModel(tableModel);
for (int i=0; i<3; i++) a1.getModel().setValueAt(head[i], 0, i);
JPanel panelwrap = new JPanel (new FlowLayout ()); JPanel panel = new JPanel (new GridLayout (2,1)); panel.setPreferredSize (new Dimension (500,400)); // panel.setBackground (Color.black); panel.add (a,BorderLayout.CENTER); JScrollPane a2 = new JScrollPane (a1); panel.add (a2,BorderLayout.CENTER); panelwrap.add(panel);
JFrame frame = new JFrame ("JTableDemo"); frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); frame.setContentPane (panelwrap); frame.setSize(500,400); frame.pack(); frame.show(); } public static void main(String[] args) { PTest k = new PTest(); } }
//////////////////////////////////////////自己的//////////////////////////////////////
private JTable getJTable0() { if (jTable0 == null) { jTable0 = new JTable(); jTable0.setModel(new DefaultTableModel(new Object[][] { {false, "null", "null", "com1", "null", "null", "null", "null", "null", "null", }, {false, "null", "null", "com2", "null", "null", "null", "null", "null", "null", }, { false, "null", "null", "com3", "null", "null", "null", "null", "null", "null",}, { false,"null", "null", "com4", "null", "null", "null", "null", "null", "null", }, { false,"null", "null", "com5", "null", "null", "null", "null", "null", "null", }, { false, "null", "null", "com6", "null", "null", "null", "null", "null", "null",}, { false, "null", "null", "com7", "null", "null", "null", "null", "null", "null", }, {false, "null", "null", "com8", "null", "null", "null", "null", "null", "null", }, { false,"null", "null", "com9", "null", "null", "null", "null", "null", "null", }, { false,"null", "null", "com10", "null", "null", "null", "null", "null", "null", }, {false, "null", "null", "com11", "null", "null", "null", "null", "null", "null", }, { false, "null", "null", "com12", "null", "null", "null", "null", "null", "null", }, }, new String[] {"操作", "ID", "status", "序号", "产品序列号", "半成品序列号", "所属工作任务号", "产品型号（pn码）", "生产进度状态", "端口状态", }) { private static final long serialVersionUID = 1L; Class<?>[] types = new Class<?>[] { Boolean.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, Object.class, }; public Class<?> getColumnClass(int columnIndex) { return types[columnIndex]; } // //使table不可编辑的代码（放在model中有效）全部不可编辑 // public boolean isCellEditable(int row, int column) // { // return false; // } //指定列不可编辑 boolean[] editables = {true, false, false,false,false,false,false,false,false,false}; public boolean isCellEditable(int row, int col) { return editables[col]; }
//指定行不可编辑 boolean[] editables = {true, false, false,false,false,false,false,false}; public boolean isCellEditable(int row, int col) { return editables[row]; }
}); } return jTable0; }