Select a row in jtable, enter a number, and move one digit forward automatically. Click the return key to delete the last number.

Each time you enter a number, the number moves one digit forward, and the entered number is displayed in the last cell. Click the delete key, and the number moves one digit backward to delete the number in the last cell. For example

 

 

Package table; </P> <p> Import Java. AWT. borderlayout; <br/> Import Java. AWT. container; <br/> Import Java. AWT. dimension; <br/> Import Java. AWT. event. keyadapter; <br/> Import Java. AWT. event. keyevent; <br/> Import Java. AWT. event. windowadapter; <br/> Import Java. AWT. event. using wevent; </P> <p> Import javax. swing. jframe; <br/> Import javax. swing. jscrollpane; <br/> Import javax. swing. jtable; <br/> Import javax. swing. ta Ble. defaulttablemodel; <br/> Import javax. swing. table. tablecolumn; </P> <p> public class test {<br/> jtable table = NULL; <br/> jinetablemodel defaultmodel = NULL; <br/> tablecolumn column = NULL; </P> <p> Public test () {<br/> jframe F = new jframe (); <br/> string [] n = {"thousands ", "Hundred", "Ten", "Yuan" };< br/> defaultmodel = new jinetablemodel (n, 10); <br/> table = new jtable (defaultmodel ); </P> <p> table. setpreferredscrol Lableviewportsize (new dimension (400, 80); <br/> jscrollpane S = new jscrollpane (table); <br/> container contentpane = f. getcontentpane (); <br/> contentpane. add (S, borderlayout. center); </P> <p> table. addkeylistener (New mylistener (); </P> <p> F. settitle ("test table actionlisener"); <br/> F. setlocation (500,300); <br/> F. pack (); <br/> F. setvisible (true); <br/> F. addwindowlistener (New windowadapter () {<br/> pub LIC void windowclosing (invalid wevent e) {<br/> system. exit (0); <br/>}< br/> }); <br/>}</P> <p> public class mylistener extends keyadapter {<br/> Public void keypressed (keyevent ke) {<br/> int ROW = table. getselectedrow (); <br/> int Cols = table. getcolumncount (); <br/> Boolean accept = false; <br/> If (Ke. getkeycode ()> = 48 & Ke. getkeycode () <= 57) {<br/> If (table. getvalueat (row, 0) = NULL) {<br/> If (K E. getkeycode () = 48) {<br/> If (table. getvalueat (row, cols-2 )! = NULL) {<br/> Accept = true; <br/>}< br/>} else {<br/> Accept = true; <br/>}< br/>} else if (Ke. getkeycode () = 8) {<br/> If (table. getvalueat (row, cols-1 )! = NULL) {<br/> for (INT I = Cols-1; I> 0; I --) {<br/> table. setvalueat (table. getvalueat (row, I-1), row, I); <br/>}< br/> table. setvalueat (null, row, 0); <br/>}</P> <p> If (accept) {<br/> for (INT I = 0; I <Cols-1; I ++) {<br/> table. setvalueat (table. getvalueat (row, I + 1), row, I); <br/>}< br/> table. setvalueat (null, row, cols-1); <br/> table. setvalueat (Ke. getkeychar (), row, cols-1 ); <br/>}</P> <p> Public static void main (string ARGs []) {<br/> new test (); <br/>}</P> <p> public class jinetablemodel extends defaulttablemodel {</P> <p> Private Static final long serialversionuid = 1l; </P> <p> Public Boolean iscelleditable (int r, int c) {<br/> return false; <br/>}</P> <p> jinetablemodel (object [] columnnames, int rowcount) {<br/> super (columnnames, rowcount ); <br/>}</P> <p>

 

Running result