Frequently asked questions about JTable

Lose focus exit edit state;

Table.setclientperpoty ("Terminateeditonfocuslost", true);

Set some columns not editable;

Custom TableModel rewrite iscelleditable method;

Refresh the JTable data:

Table.setmodle (Modle);

Delete data:

Model.remove (int row);

Get the value in JTable:

Jtable1.getvalueat ();

Sort Sorter

Tablerowsorter<tablemodel> sorter = new tablerowsorter<tablemodel> (DTM);
Jtable1.setrowsorter (sorter);

Specific implementation look at the code: when the form starts, no content is displayed.

Package Com.bdc;import Java.awt.borderlayout;import Java.awt.event.actionevent;import Java.awt.event.actionlistener;import Javax.swing.jbutton;import Javax.swing.jframe;import Javax.swing.JOptionPane ; Import Javax.swing.jpanel;import Javax.swing.jscrollpane;import Javax.swing.jtable;import Javax.swing.table.defaulttablemodel;import Javax.swing.table.tablemodel;import Javax.swing.table.TableRowSorter; public class Jtabletest extends JFrame {string[][] data={{"AAA", "111"},{"BBB", "222"},{"CCC", "333"}; String[] cols= {"User", "password"};D Efaulttablemodel DTM; JTable jtable1;public jtabletest () {//Set basic Properties Setalwaysontop (True); Setdefaultcloseoperation (exit_on_close); SetSize ( 300,300);//Add Component jtable1= new JTable (DTM); Jtable1.putclientproperty ("Terminateeditonfocuslost", true); Exit the edit state when the focus is lost, and click the Modify button to get the modified value; add (jtable1); JScrollPane jsp= New JScrollPane (Jtable1), add (JSP); JPanel jp1=new JPanel (); Add (Jp1,borderlayout.south); JButton listall=new JButton ("Show All"); Jp1.add (Listall); JButton delete=new JButton ("Delete"); Jp1.add (delete); JButton modify=new JButton ("Modify"); Jp1.add (modify);//Add Event Listener; Listall.addactionlistener (new ActionListener () {@ overridepublic void actionperformed (ActionEvent e) {//Customize a TableModel, re-iscelleditable, set to the first column is not editable; dtm=new DefaultTableModel (Data,cols) {@Overridepublic boolean iscelleditable (int row, int column) {return column==1?true:false ;}};/ /Create a sequencer, set as the sorting property of table; Sorting can be done by clicking on a column name.  Tablerowsorter<tablemodel> sorter = new tablerowsorter<tablemodel> (DTM); Jtable1.setrowsorter (sorter); Jtable1.setmodel (DTM);}}); Delete.addactionlistener (new ActionListener () {@Overridepublic void actionperformed (ActionEvent e) {int a= Jtable1.getselectedrow ();d Tm.removerow (a); Delete a row; Jtable1.setmodel (DTM);}}); Modify.addactionlistener (new ActionListener () {@Overridepublic void actionperformed (ActionEvent e) {int aa= Jtable1.getselectedrow (); int bb=jtable1.getselectedcolumn (); if (aa==-1) {return;} Joptionpane.showmessagedialog (Jtabletest.this, "successfully modified to" +jtable1.getvalueat (AA, BB));}); Public static void Main (string[] args) {new Jtabletest (). setvisible (True);}} 

　　

　

Frequently asked questions about JTable