How to show Data in JLabel and Jext Boxes java swing dynamically from properties file Without knowing data in properties file -

ii working on module of java swing in want return data java swing textboxes , labels.

the text boxes , jlabel should varies dynamically according data retrieve , don't know properties name , values...but have retrieve data properties file without knowing properties name , value jlabel , jtextboxes.

...and should varies according data...like property name should comes jlabel , value should come jtextboxes...

i used set interface of collection framework got data properties file key , values of key...but don't know how show in jlabel , jtextboxs

public class configswingdemo extends jframe  {        private file configfile = new file("momark.properties");     private properties configprops;     private jbutton buttonsave = new jbutton("save");     static list<jlabel> listoflabels = new arraylist<jlabel>();     static list<jtextfield> listoftextfields = new arraylist<jtextfield>();      public configswingdemo()     {         super("properties configuration demo");          setlayout(new gridbaglayout());           gridbagconstraints constraints = new gridbagconstraints();         constraints.gridx = 0;         constraints.gridy = 0;         constraints.insets = new insets(10, 10, 5, 10);         constraints.anchor = gridbagconstraints.west;         constraints.gridy = 1;         constraints.gridx = 0;         constraints.gridwidth = 2;         constraints.anchor = gridbagconstraints.center;         add(buttonsave, constraints);           buttonsave.addactionlistener(new actionlistener() {             @override             public void actionperformed(actionevent arg0) {                 try {                     saveproperties();                     joptionpane.showmessagedialog(configswingdemo.this,                              "properties saved successfully!");                      } catch (ioexception ex) {                     joptionpane.showmessagedialog(configswingdemo.this,                              "error saving properties file: " + ex.getmessage());                         }             }         });          setdefaultcloseoperation(jframe.exit_on_close);         pack();         setlocationrelativeto(null);         setvisible(true);          try {             loadproperties();         } catch (ioexception ex) {             joptionpane.showmessagedialog(this, "the momark.properties file not exist, default properties loaded.");         }                set<object> keys = configprops.keyset();              for(object k:keys){                 string key = (string)k;                 system.out.println(key+": "+configprops.getproperty(key));                 }     }      /////////////////     private void loadproperties() throws ioexception {         properties defaultprops = new properties();         // sets default properties          configprops = new properties(defaultprops);          // loads properties file         inputstream inputstream = new fileinputstream(configfile);         configprops.load(inputstream);          inputstream.close();      }      private void saveproperties() throws ioexception {         //configprops.setproperty("server.url", texturl.gettext());          outputstream outputstream = new fileoutputstream(configfile);         configprops.store(outputstream, "properties setttings");         outputstream.close();     }      public static void main(string[] args) {         swingutilities.invokelater(new runnable() {             @override             public void run() {                 new configswingdemo();              }         });      } } 

/*output console :

          property1 : value1            property2 : value2            property3 : value3            property4 : value4 

i want show output in jlabel , jtext field dynamically without know properies data ..so if properties increase jlabels , textboxes increse according properties*/

okay, have properties in key/value pairs, assuming key represents label , value text, can use propertynames enumeration , iterate on list ... allow create labels/fields.

    gridbagconstraints constraints = new gridbagconstraints();     constraints.gridx = 0;     constraints.gridy = 0;     constraints.insets = new insets(10, 10, 5, 10);     constraints.anchor = gridbagconstraints.west;      set<object> keys = configprops.keyset();     (object k : keys) {         jlabel label = new jlabel(k.tostring());         jtextfield field = new jtextfield(configprops.getproperty(k.tostring()), 10);          constraints.gridx = 0;         add(label, constraints);         constraints.gridx++;         add(field, constraints);         constraints.gridy++;     }     constraints.gridx = 0;     constraints.gridwidth = 2;     constraints.anchor = gridbagconstraints.center;     add(buttonsave, constraints); 

but want map maps keys/labels fields, assuming want save values again...

public class configswingdemo extends jframe {      private map<string, jtextfield> fieldsmap = new hashmap<>(25);     //...      (object k : keys) {         jlabel label = new jlabel(k.tostring());         jtextfield field = new jtextfield(configprops.getproperty(k.tostring()), 10);         fieldsmap.put(k.tostring(), field); 

then, want save values, use like...

configprops.clear(); (string key : fieldsmap.keyset()) {     jtextfield field = fieldsmap.get(key);     configprops.setproperty(key, field.gettext()); } 

to copy values properties , save it.

now, having said that, i'd recommend using jtable, have basic model (key/value pairs in properties), lot simpler

see how use tables more details