Java Regular Expression learning-simple gadgets

I recently learned Java regular expressions, but I have to writeProgramOnly. It is inconvenient, so I made a simple tool.

I am playing on my own, with limited levels and a very simple interface.

 

It looks like this:

 

After entering the regular expression and the text to be matched, click the matcher button to display the matching result in the following table (The following is the regular expression of the URL ):

 

The reset button indicates a match from the beginning.

 

Below isSource code, There are only two classes

Main class display logic:

Package frame1; <br/> Import Java. AWT. *; <br/> Import Java. AWT. event. actionlistener; <br/> Import Java. AWT. event. focusevent; <br/> Import Java. AWT. event. focuslistener; <br/> Import javax. swing. *; <br/> Import javax. swing. table. tablemodel; <br/> public class regextest extends jframe {<br/>/** <br/> * @ version 0.1 11/17/10 <br/> * @ author jiong <br/> */<br/> Private Static final long serialversionuid = 1l; <br/> private int int_height = 400, int_width = 600; <br/> private Java. AWT. toolkit TK = Java. AWT. toolkit. getdefatooltoolkit (); </P> <p> Public jtextfield txtf_regex = new jtextfield (); <br/> Public jtextarea txta_content = new jtextarea (); </P> <p> Public jbutton button_match = new jbutton ("matcher"); <br/> Public jbutton button_reset = new jbutton ("reset "); <br/> private tablemodel tablemodle = new mytablemodle (this); <br/> Public jtable table_result = new jtable (tablemodle); <br/> Public jscrollpane panel_result; </P> <p> Public static void main (string [] ARGs) {<br/> regextest T = new regextest (); <br/> T. init (); <br/> T. showui (); </P> <p >}< br/> private void showui () {<br/> txtf_regex.setpreferredsize (new dimension (this.int _ width-10, 25); <br/> txta_content.setpreferredsize (new dimension (this.int _ width-10, this.int _ height/2 )); <br/> txtf_regex.settext ("Please input regular expressions... "); <br/> txtf_regex.addfocuslistener (New focuslistener () {<br/> @ override <br/> Public void focusgained (focusevent E) {<br/> // todo auto-generated method stub <br/> jtextfield t = (jtextfield) E. getsource (); <br/> If (T. gettext (). equals ("Please input regular expressions... ") <br/> T. settext (""); </P> <p >}< br/> @ override <br/> Public void focuslost (focusevent E) {<br/> // todo auto-generated method stub <br/> jtextfield t = (jtextfield) E. getsource (); <br/> string STR = T. gettext (). trim (); <br/> If (Str. equals ("") <br/> T. settext ("Please input regular expressions... "); <br/>}</P> <p >}); <br/> txta_content.settext (" Please input content... "); <br/> txta_content.addfocuslistener (New focuslistener () {<br/> @ override <br/> Public void focusgained (focusevent E) {<br/> // todo auto-generated method stub <br/> jtextarea t = (jtextarea) E. getsource (); <br/> If (T. gettext (). equals ("Please input content... ") <br/> T. settext (""); <br/>}< br/> @ override <br/> Public void focuslost (focusevent E) {<br/> // todo auto-generated method stub <br/> jtextarea t = (jtextarea) E. getsource (); <br/> string STR = T. gettext (). trim (); <br/> If (Str. equals ("") <br/> T. settext ("Please input content... "); <br/>}</P> <p >}); <br/> This. add (txtf_regex); <br/> This. add (txta_content); </P> <p> button_match.addactionlistener (actionlistener) tablemodle); <br/> This. add (button_match); </P> <p> button_reset.addactionlistener (actionlistener) tablemodle); <br/> button_reset.setenabled (false); <br/> This. add (button_reset); <br/> panel_result = new jscrollpane (table_result); <br/> panel_result.setpreferredsize (new dimension (this.int _ width, 200 )); </P> <p> This. add (panel_result); <br/> // This. pack (); <br/> This. setvisible (true); <br/>}< br/> private void Init () {<br/> // todo auto-generated method stub <br/> This. settitle ("testregex"); <br/> This. setsize (new dimension (this.int _ width, this.int _ height); <br/> This. setlocation (TK. getscreensize (). width // set the window to the center <br/>-getwidth ()/2, (TK. getscreensize (). height-getheight ()/2); <br/> This. setresizable (false); <br/> This. setdefaclocloseoperation (jframe. exit_on_close); <br/> This. setlayout (New flowlayout (flowlayout. center, 5, 5); <br/>}< br/>}

control logic and data of the second type

Package frame1; <br/> Import javax. swing. *; <br/> Import javax. swing. event. tablemodellistener; <br/> Import Java. AWT. color; <br/> Import Java. AWT. event. actionevent; <br/> Import Java. AWT. event. actionlistener; <br/> Import Java. util. regEx. matcher; <br/> Import Java. util. regEx. pattern; <br/> public class mytablemodle implements javax. swing. table. tablemodel, actionlistener {<br/> private regextest; <br /> Public mytablemodle (regextest) {<br/> This. regextest = regextest; <br/>}< br/> @ override <br/> Public void addtablemodellistener (tablemodellistener L) {<br/> // todo auto-generated method stub </P> <p >}< br/> @ override <br/> public class <?> Getcolumnclass (INT columnindex) {<br/> // todo auto-generated method stub <br/> return object. class; <br/>}< br/> @ override <br/> Public int getcolumncount () {<br/> // todo auto-generated method stub <br/> return 3; <br/>}< br/> private string [] names = {"group ", "name", "capture" };< br/> @ override </P> <p> Public String getcolumnname (INT columnindex) {<br/> // todo auto-generated method stub <br/> return Names [columni Ndex]; <br/>}< br/> @ override <br/> Public int getrowcount () {<br/> // todo auto-generated method stub <br/> If (M = NULL) return 0; <br/> return M. groupcount () + 1; <br/>}< br/> @ override <br/> Public object getvalueat (INT rowindex, int columnindex) {<br/> // todo auto-generated method stub <br/> If (columnindex = 0) <br/> return "$" + rowindex; <br/> If (columnindex = 1) <br/> return ""; <br/> If (columnindex = 2) <Br/> return M. group (rowindex); <br/> return NULL; <br/>}< br/> @ override <br/> Public Boolean iscelleditable (INT rowindex, int columnindex) {<br/> // todo auto-generated method stub <br/> return false; <br/>}< br/> @ override <br/> Public void removetablemodellistener (tablemodellistener L) {<br/> // todo auto-generated method stub </P> <p >}< br/> @ override <br/> Public void setvalueat (Object avalue, int rowi Ndex, int columnindex) {<br/> // todo auto-generated method stub </P> <p >}< br/> /////////////// //////////////////////////////////////// //////////////////////////////////////// /// // <br/> pattern P = NULL; <br/> matcher M = NULL; <br/> string RegEx, content = NULL; <br/> @ override <br/> Public void action=med (actionevent E) {<br/> // todo auto-generated method stub <br/> jbutton button = (jbutton) E. Getsource (); <br/> If (button. equals (regextest. button_match) {<br/> RegEx = this.regextest.txt f_regex.gettext (); <br/> content = this.regextest.txt a_content.gettext (); <br/> If (M = NULL & P = NULL) {<br/> try {<br/> P = pattern. compile (RegEx); <br/>} catch (Java. util. regEx. patternsyntaxexception E1) {<br/> // todo auto-generated Catch Block <br/> // e1.printstacktrace (); <br/> system. out. println ("regular expression syntax error "); <Br/> return; <br/>}< br/> M = P. matcher (content); <br/> regextest. button_reset.setenabled (true); <br/>}</P> <p> If (! M. find () {<br/> M = NULL; <br/> P = NULL; <br/> regextest. button_reset.setenabled (false); <br/>}< br/>///} else {<br/> // regextest.txt a_content.setselectionstart (M. start (); <br/> // regextest.txt a_content.setselectionend (M. end (); <br/> // regextest.txt a_content.setselectedtextcolor (color. red); <br/> // system. out. println ("START:" + M. start () + "end:" + M. end (); <br/> // system. out. println ("section:" Your regextest.txta_content.getselectedtext(your regextest.txt a_content.getselectedtextcolor (); <br/> // your a_content ); <br/> //} <br/>} else {<br/> M = NULL; <br/> P = NULL; <br/> regextest. button_reset.setenabled (false); <br/>}< br/> javax. swing. swingutilities. updatecomponenttreeui (regextest. panel_result); <br/>}< br/>