java - Jframe form in netbean -

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a>>>

package ja7;  import javax.swing.jframe;  /**  *  * @author lalit kumar  */ public class gframe extends javax.swing.jframe {      /**      * creates new form gframe      */     public gframe() {         initcomponents();     }      /**      * method called within constructor initialize form.      * warning: not modify code. content of method      * regenerated form editor.      */     @suppresswarnings("unchecked")     // <editor-fold defaultstate="collapsed" desc="generated code">                               private void initcomponents() {          jbutton1 = new javax.swing.jbutton();         jbutton2 = new javax.swing.jbutton();         jtextfield1 = new javax.swing.jtextfield();         jtextfield2 = new javax.swing.jtextfield();          setdefaultcloseoperation(javax.swing.windowconstants.exit_on_close);         settitle("try magic");         setresizable(false);          jbutton1.settext("cal");         jbutton1.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jbutton1actionperformed(evt);             }         });          jbutton2.settext("fing grade ");         jbutton2.setenabled(false);         jbutton2.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jbutton2actionperformed(evt);             }         });          jtextfield1.seteditable(false);         jtextfield1.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jtextfield1actionperformed(evt);             }         });          javax.swing.grouplayout layout = new javax.swing.grouplayout(getcontentpane());         getcontentpane().setlayout(layout);         layout.sethorizontalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgroup(layout.createsequentialgroup()                 .addgap(49, 49, 49)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)                     .addcomponent(jbutton2)                     .addcomponent(jbutton1, javax.swing.grouplayout.preferred_size, 76, javax.swing.grouplayout.preferred_size))                 .addpreferredgap(javax.swing.layoutstyle.componentplacement.related, 111, short.max_value)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)                     .addcomponent(jtextfield2, javax.swing.grouplayout.preferred_size, 88, javax.swing.grouplayout.preferred_size)                     .addcomponent(jtextfield1, javax.swing.grouplayout.preferred_size, 88, javax.swing.grouplayout.preferred_size))                 .addgap(67, 67, 67))         );         layout.setverticalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgroup(layout.createsequentialgroup()                 .addgap(73, 73, 73)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.baseline)                     .addcomponent(jbutton1)                     .addcomponent(jtextfield2, javax.swing.grouplayout.preferred_size, javax.swing.grouplayout.default_size, javax.swing.grouplayout.preferred_size))                 .addgap(38, 38, 38)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.baseline)                     .addcomponent(jbutton2)                     .addcomponent(jtextfield1, javax.swing.grouplayout.preferred_size, javax.swing.grouplayout.default_size, javax.swing.grouplayout.preferred_size))                 .addcontainergap(143, short.max_value))         );          jbutton2.setvisible(false);         jtextfield1.setvisible(false );          pack();     }// </editor-fold>                              private void jbutton1actionperformed(java.awt.event.actionevent evt) {                                                  // todo add handling code here:         int a,b;         int c;         a=50;         b=56;         c=a+b;          jtextfield2.settext(integer.tostring(c));         jbutton2.setenabled(true);         jbutton2.setvisible(true );        jtextfield1.setvisible(true );          }                                              private void jtextfield1actionperformed(java.awt.event.actionevent evt) {                                                     // todo add handling code here:         }                                                 private void jbutton2actionperformed(java.awt.event.actionevent evt) {                                                  // todo add handling code here:         int c;        c=integer.parseint ( jtextfield2.gettext()) ;         if(c>50)        {            jtextfield1.settext("a ward");         }        else              jtextfield1.settext(" b ward");      }                                              /**      * @param args command line arguments      */     public static void main(string args[]) {         /* set nimbus , feel */         //<editor-fold defaultstate="collapsed" desc=" , feel setting code (optional) ">         /* if nimbus (introduced in java se 6) not available, stay default , feel.          * details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html           */         try {             (javax.swing.uimanager.lookandfeelinfo info : javax.swing.uimanager.getinstalledlookandfeels()) {                 if ("nimbus".equals(info.getname())) {                     javax.swing.uimanager.setlookandfeel(info.getclassname());                     break;                 }             }         } catch (classnotfoundexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (instantiationexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (illegalaccessexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (javax.swing.unsupportedlookandfeelexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         }         //</editor-fold>          /* create , display form */         java.awt.eventqueue.invokelater(new runnable() {             public void run() {                 new gframe().setvisible(true);              }         });     }      // variables declaration - not modify                          private javax.swing.jbutton jbutton1;     private javax.swing.jbutton jbutton2;     private javax.swing.jtextfield jtextfield1;     private javax.swing.jtextfield jtextfield2;     // end of variables declaration                    }

b>>

package ja7;  import javax.swing.jframe;  /**  *  * @author lalit kumar  */ public class gframe extends javax.swing.jframe {      /**      * creates new form gframe      */     public gframe() {         initcomponents();     }      /**      * method called within constructor initialize form.      * warning: not modify code. content of method      * regenerated form editor.      */     @suppresswarnings("unchecked")     // <editor-fold defaultstate="collapsed" desc="generated code">                               private void initcomponents() {          jbutton1 = new javax.swing.jbutton();         jbutton2 = new javax.swing.jbutton();         jtextfield1 = new javax.swing.jtextfield();         jtextfield2 = new javax.swing.jtextfield();          setdefaultcloseoperation(javax.swing.windowconstants.exit_on_close);         settitle("try magic");         setresizable(false);          jbutton1.settext("cal");         jbutton1.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jbutton1actionperformed(evt);             }         });          jbutton2.settext("fing grade ");         jbutton2.setenabled(false);         jbutton2.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jbutton2actionperformed(evt);             }         });          jtextfield1.seteditable(false);         jtextfield1.addactionlistener(new java.awt.event.actionlistener() {             public void actionperformed(java.awt.event.actionevent evt) {                 jtextfield1actionperformed(evt);             }         });          javax.swing.grouplayout layout = new javax.swing.grouplayout(getcontentpane());         getcontentpane().setlayout(layout);         layout.sethorizontalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgroup(layout.createsequentialgroup()                 .addgap(49, 49, 49)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)                     .addcomponent(jbutton2)                     .addcomponent(jbutton1, javax.swing.grouplayout.preferred_size, 76, javax.swing.grouplayout.preferred_size))                 .addpreferredgap(javax.swing.layoutstyle.componentplacement.related, 111, short.max_value)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)                     .addcomponent(jtextfield2, javax.swing.grouplayout.preferred_size, 88, javax.swing.grouplayout.preferred_size)                     .addcomponent(jtextfield1, javax.swing.grouplayout.preferred_size, 88, javax.swing.grouplayout.preferred_size))                 .addgap(67, 67, 67))         );         layout.setverticalgroup(             layout.createparallelgroup(javax.swing.grouplayout.alignment.leading)             .addgroup(layout.createsequentialgroup()                 .addgap(73, 73, 73)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.baseline)                     .addcomponent(jbutton1)                     .addcomponent(jtextfield2, javax.swing.grouplayout.preferred_size, javax.swing.grouplayout.default_size, javax.swing.grouplayout.preferred_size))                 .addgap(38, 38, 38)                 .addgroup(layout.createparallelgroup(javax.swing.grouplayout.alignment.baseline)                     .addcomponent(jbutton2)                     .addcomponent(jtextfield1, javax.swing.grouplayout.preferred_size, javax.swing.grouplayout.default_size, javax.swing.grouplayout.preferred_size))                 .addcontainergap(143, short.max_value))         );          jbutton2.setvisible(false);         jtextfield1.setvisible(false );          pack();     }// </editor-fold>                              private void jbutton1actionperformed(java.awt.event.actionevent evt) {                                                  // todo add handling code here:         int a,b;         int c;         a=50;         b=56;         c=a+b;          jtextfield2.settext(integer.tostring(c));         jbutton2.setenabled(true);         jbutton2.setvisible(true );          }                                              private void jtextfield1actionperformed(java.awt.event.actionevent evt) {                                                     // todo add handling code here:         }                                                 private void jbutton2actionperformed(java.awt.event.actionevent evt) {                                                  // todo add handling code here:         int c;        c=integer.parseint ( jtextfield2.gettext()) ;         jtextfield1.setvisible(true );         if(c>50)        {            jtextfield1.settext("a ward");         }        else              jtextfield1.settext(" b ward");      }                                              /**      * @param args command line arguments      */     public static void main(string args[]) {         /* set nimbus , feel */         //<editor-fold defaultstate="collapsed" desc=" , feel setting code (optional) ">         /* if nimbus (introduced in java se 6) not available, stay default , feel.          * details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html           */         try {             (javax.swing.uimanager.lookandfeelinfo info : javax.swing.uimanager.getinstalledlookandfeels()) {                 if ("nimbus".equals(info.getname())) {                     javax.swing.uimanager.setlookandfeel(info.getclassname());                     break;                 }             }         } catch (classnotfoundexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (instantiationexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (illegalaccessexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         } catch (javax.swing.unsupportedlookandfeelexception ex) {             java.util.logging.logger.getlogger(gframe.class.getname()).log(java.util.logging.level.severe, null, ex);         }         //</editor-fold>          /* create , display form */         java.awt.eventqueue.invokelater(new runnable() {             public void run() {                 new gframe().setvisible(true);              }         });     }      // variables declaration - not modify                          private javax.swing.jbutton jbutton1;     private javax.swing.jbutton jbutton2;     private javax.swing.jtextfield jtextfield1;     private javax.swing.jtextfield jtextfield2;     // end of variables declaration                    }

in case a:when click on cal button(setvisible used in calbutton) jtextfield1 become visible . in case b:when click on cal button(setvisible used in fing grade)jtextfield1 become visible if resize window.

why need resize window in case b?

you need add revalidate(); this:

private void jbutton2actionperformed(java.awt.event.actionevent evt) {                                              // todo add handling code here:     int c;    c=integer.parseint ( jtextfield2.gettext()) ;     jtextfield1.setvisible(true );     if(c>50)    {        jtextfield1.settext("a ward");     }    else          jtextfield1.settext(" b ward");      revalidate(); }

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