File selector jfilechooser Creation

Package src10; import Java. AWT. borderlayout; import Java. AWT. container; import Java. AWT. dimension; import Java. AWT. event. actionevent; import Java. AWT. event. actionlistener; import Java. AWT. event. windowadapter; import Java. AWT. event. using wevent; import Java. io. file; import Java. io. fileinputstream; import Java. io. filenotfoundexception; import Java. io. fileoutputstream; import Java. io. ioexception; import javax. swing. Jbutton; import javax. swing. jfilechooser; import javax. swing. jframe; import javax. swing. jlabel; import javax. swing. jpanel; import javax. swing. jscrollpane; import javax. swing. jtextarea; public class S01 implements actionlistener {jframe JF = NULL; jlabel JL = NULL; jtextarea JTA = NULL; jfilechooser jfc = NULL; private object finally; Public S01 () {JF = new jframe ("filechooser example"); Container JCP = JF. get Contentpane (); JTA = new jtextarea (); jscrollpane JSP = new jscrollpane (JTA); JSP. setpreferredsize (new dimension (350,300); jpanel JP = new jpanel (); jbutton jbt1 = new jbutton ("new file "); jbutton jbt2 = new jbutton ("storage file"); jbt1.addactionlistener (this); jbt2.addactionlistener (this); JP. add (jbt1); JP. add (jbt2); JL = new jlabel ("", jlabel. center); jfc = new jfilechooser ("D: \"); JCP. add (JL, borderlayout. north); JC P. add (JSP, borderlayout. center); JCP. add (JP, borderlayout. south); JF. pack (); JF. setvisible (true); JF. addwindowlistener (New windowadapter () {public void windowclosing (invalid wevent e) {system. exit (0) ;}}) ;}public static void main (string [] ARGs) {New S01 () ;}public void actionreceivmed (actionevent e) {file = NULL; int result; fileinputstream fin = NULL; fileoutputstream fout = NULL; If (E. getactioncommand (). Equals ("new file") {jfc. setapprovebuttontext ("OK"); jfc. setdialogtitle ("Open File"); Result = jfc. showopendialog (Jf); JTA. settext (""); If (result = jfc. approve_option) {file = jfc. getselectedfile (); Jl. settext ("the name of the file you selected to open is:" + file. getname ();} else if (result = jfc. cancel_option) {Jl. settext ("You have not selected any file") ;}} if (file! = NULL) {try {fin = new fileinputstream (File);} catch (filenotfoundexception E1) {Jl. settext ("file not found"); Return ;}} int readbyte; try {While (readbyte = fin. read ())! =-1) {JTA. append (string. valueof (char) readbyte);} catch (ioexception E2) {Jl. settext ("file read error");} finally {try {If (Fin! = NULL) {fin. close () ;}} catch (ioexception E3) {}} if (E. getactioncommand (). equals ("storage file") {result = jfc. showsavedialog (Jf); file = NULL; string filename; If (result = jfc. approve_option) {file = jfc. getselectedfile (); Jl. settext ("the name of the file you selected to store is called:" + file. getname ();} else if (result = jfc. cancel_option) {Jl. settext ("You have not selected any file") ;}} if (file! = NULL) {try {fout = new fileoutputstream (File);} catch (filenotfoundexception E4) {Jl. settext ("file not found"); return;} string content = JTA. gettext (); try {fout. write (content. getbytes ();} catch (ioexception E5) {Jl. settext ("file writing error");} finally {If (fout! = NULL) {try {fout. Close ();} catch (ioexception E6 ){}}}}}}