Swing Prac

7/21/2019 Swing Prac

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1: hello world: (label, button).

Take button and name is b1.

Take label and name it l1.

In action performed event of button b1 write following:

l1.setText(!"##$ %$&#')



. greeting: (label, text*eld, button).

private void b1+ctionerformed(-ava.awt.event.+ction"vent evt)

/tring message 0 hello t1.getText()

l.setText(message)

2

private void b+ctionerformed(-ava.awt.event.+ction"vent evt)

t1.setText()

l.setText()

2

3. login form: (label, text*eld, password*led, button, checkbox).




if(t1.getText().e4ualsIgnore5ase(abc) 66 t.getText().e4uals(13))

if(cb1.is/elected()00true)

l3.setText(login successfull7)

2

2

else

l3.setText(login failed)

2

2


t1.setText()

t.setText()

l.setText()

cb1.set/elected(false)

2



8. (label, scrollpane, textarea, radiobutton, button, buttongroup)



/et editable propert7 of textarea to false.

/et enabled propert7 of button to false.

9oto eventswindowwindow$pen in vents of form

5ode:

private void form%indow$pened(-ava.awt.event.%indow"vent evt)

bg1.add(rb1)

bg1.add(rb)

2

private void rb1+ctionerformed(-ava.awt.event.+ction"vent evt)

b1.set"nabled(true)

2

private void rb+ctionerformed(-ava.awt.event.+ction"vent evt)

b1.set"nabled(false)

2

;. label with image.



<nder default package go to others in that on left select others and in right select

folder.

=ame the folder to images.

aste some images under images folder.

/et the icon propert7 of label.

5ode:

import -avax.swing.>

/tring?@ imagenames 0

backdisc.png,cop7discAcd.png,dataAcd.png,videoAcd.png2

int count0B


ImageIcon?@ icon 0 new ImageIcon?8@

for(int i0BiCicon.lengthi)

icon?i@ 0 new

ImageIcon(get5lass().get&esource(DimagesDimagenames?i@))

2

if(countCB)

count01

if(countE0B 66 countCimagenames.length)

l1.setIcon(icon?count@)

count

2

2




ImageIcon?@ icon 0 new ImageIcon?8@

for(int i0BiCicon.lengthi)

icon?i@ 0 new

ImageIcon(get5lass().get&esource(DimagesDimagenames?i@))

2

if(countE0imagenames.length)

count0imagenames.length

if(countE0B 66 countCimagenames.length)

l1.setIcon(icon?count@)

count

2

2



F. togglebuttons:

import -avax.swing.>

import -ava.awt.>


if(b1.is/elected())

b1.setGackground(5olor.red)

b1.setText($=)

l1.setIcon(new ImageIcon(get5lass().get&esource(DimagesDon.-pg)))

2

else

b1.setGackground(5olor.green)

b1.setText($HH)

l1.setIcon(new ImageIcon(get5lass().get&esource(DimagesDo.-pg)))

2

2



J. K5omboGox and K#ist

5hange the model propert7 of combobox and list

'efault#istLodel model 0 new 'efault#istLodel()


cb1.addItem(t1.getText())

model.add"lement(t1.getText())

list1.setLodel(model)

2


tr7

if(cb1.getItem5ount()M0B 66 Mmodel.is"mpt7())

cb1.removeItem+t(cb1.get/electedIndex())

model.remove"lement+t(list1.get/electedIndex())

2

else

l3.setText(product list should not be empt7)

2

2

catch("xception e)

l3.setText(7ou must choose an item to delete)



2

2

N. K"ditorane 6 KTextane



"ditorpane

Textpane

Lake new folder and name it web.

9oto source package and goto others and there make a html *le named m7page.

5ode:




tr7

ep1.setage(t1.getText())

tp1.setage(get5lass().get&esource(webDm7page.html))

2

catch("xception e)

2

2

!tml:

O. KTree



5hange model propert7 of KTree.

import -avax.swing.tree.'efaultLutableTree=ode

import -avax.swing.tree.'efaultTreeLodel


l1.setText()

'efaultTreeLodel model 0 ('efaultTreeLodel)tree1.getLodel()

'efaultLutableTree=ode selectednode 0

('efaultLutableTree=ode)tree1.get#ast/electedath5omponent()

if(selectednode.is&oot())

l1.setText(7ou cant delete root)

2

else

if(selectednodeM0null)

model.remove=odeHromarent(selectednode)

2



2

2


l1.setText()

'efaultTreeLodel model 0 ('efaultTreeLodel) tree1.getLodel()

'efaultLutableTree=ode root 0 ('efaultLutableTree=ode)model.get&oot()

if(Mt1.getText().trim().e4uals())

root.add(new 'efaultLutableTree=ode(t1.getText()))

model.reload()

2

else

l1.setText(7ou must enter countr7)

2

2


l1.setText()




'efaultLutableTree=ode newcit7 0 new 'efaultLutableTree=ode(t.getText())

if(selectednode.is&oot())



l1.setText(7ou must select countr7 or state)

2


if(Mt.getText().trim().e4uals())

model.insert=odeInto(newcit7,selectednode,selectednode.get5hild5ount())

2

else

l1.setText(7ou must enter cit7)

2

2

else

l1.setText(7ou must choose a parent node to insert)

2

2


l1.setText()







selectednode.set<ser$b-ect(t3.getText())

model.node5hanged(selectednode)

2

else

l1.setText(7ou must choose a node to update)

2

2

1B. KTable: add, update, delete.

9o to table events mouse mouse clicked.



5ode:

import -avax.swing.table.'efaultTableLodel


l1.setText()

'efaultTableLodel model 0 ('efaultTableLodel)table1.getLodel()

if(Mt1.getText().trim().e4uals())

model.add&ow(new $b-ect?@

t1.getText(),cb1.get/electedItem().to/tring(),t.getText()2)

2

else

l1.setText(product name must not be left blank)

2



2


l1.setText()


if(table1.get/elected&ow()001)

if(table1.get&ow5ount()00B)

l1.setText(table is empt7)

2

else

l1.setText(7ou must select a row)

2

2

else

model.setPalue+t(t1.getText(),table1.get/elected&ow(),B)

model.setPalue+t(cb1.get/electedItem().to/tring(),table1.get/elected&ow(),1)

model.setPalue+t(t.getText(),table1.get/elected&ow(),)

2

2

private void table1Louse5licked(-ava.awt.event.Louse"vent evt)




t1.setText(model.getPalue+t(table1.get/elected&ow(),B).to/tring())

cb1.set/electedItem(model.getPalue+t(table1.get/elected&ow(),1).to/tring())

t.setText(model.getPalue+t(table1.get/elected&ow(),).to/tring())

2


l1.setText()


if(table1.get/elected&ow()001)

if(table1.get&ow5ount()00B)

l1.setText(table is empt7)

2

else

l1.setText(7ou must select a row)

2

2

else

model.remove&ow(table1.get/elected&ow())

2

2



11. menu related controls and look and feel.

+dd menu bar

Then add menu name it <I go to its add form palette then add menu item. +dd

four menu items named classic, windows and motif, and nimbus. +nd give their

variables names. +lso add a separator.



+dd a label, button, toggle button, checkbox, radiobutton, button group, combo box,

list, text area, text *eld, text pane, tree, table,

import -avax.swing./wing<tilities

import -avax.swing.<ILanager

private void classic1+ctionerformed(-ava.awt.event.+ction"vent evt)

tr7

<ILanager.set#ook+ndHeel(com.sun.-ava.swing.plaf.window.%indows5lassic#ook+n

dHeel)

/wing<tilities.update5omponentTree<I(this)

2

catch("xception e)

2

2



private void windows1+ctionerformed(-ava.awt.event.+ction"vent evt)

tr7

<ILanager.set#ook+ndHeel(com.sun.-ava.swing.plaf.window.%indow#ook+ndHeel)


2

catch("xception e)

2

2

private void motif1+ctionerformed(-ava.awt.event.+ction"vent evt)

tr7

<ILanager.set#ook+ndHeel(com.sun.-ava.swing.plaf.motif.Lotif#ook+ndHeel)

/wing<tilities.update5omponentTree<I(tree1)

/wing<tilities.update5omponentTree<I(table1)

/wing<tilities.update5omponentTree<I(b1)

2

catch("xception e)



2

2

private void nimbus1+ctionerformed(-ava.awt.event.+ction"vent evt)

tr7

<ILanager.set#ook+ndHeel(com.sun.-ava.swing.plaf.nimbus.=imbus#ook+ndHeel)


2

catch("xception e)

2

2

Color chooser:



import -ava.awt.5olor


5olor c 0 cc1.get5olor()

b1.setGackground(c)

2

JFiLECHOOSER:

First program: for getting source.



import java.io.File;

import java.s!ing.JFileChooser;

private voi" #$%ction&erforme"'java.a!t.event.%ctionEvent evt( )

JFileChooser chooser * ne! JFileChooser'(;

chooser.sho!Open+ialog'null(;

File f * chooser.getSelecte"File'(;

String ,lename * f.get%#solute&ath'(;

t$.set-et',lename(;

Secon" program: to open an image:




JFileChooser chooser * ne! JFileChooser'(;

chooser.sho!Open+ialog'null(;

File f * chooser.getSelecte"File'(;

String ,lename * f.get%#solute&ath'(;

t$.set-et',lename(;

l$.set/con'ne! /mage/con'001f((;

2rite a program to "ispla3 a #utton on the screen an" on theclic4 of the



#utton change the #ac4groun" colour of applet to re" using

5S!ing6.

import java.a!t.7;


this.getContent&ane'(.set8ac4groun"'Color.#lue(;



2rite a program to "ispla3 the follo!ing


t9.set-et't$.get-et'((;



2rite a program to "ispla3 the follo!ing.

private voi" j8utton$%ction&erforme"'java.a!t.event.%ctionEvent evt( )

String a * t$.get-et'(;

int i * /nteger.parse/nt'a(;

int j*i7i;

t9.set-et'001j(;



2rite a program to "ispla3 the follo!ing.

private voi" c#$/temStateChange"'java.a!t.event./temEvent evt( )

if'c#$.isSelecte"'((

t$.set-et'c#$.get-et'((;

private voi" c#9/temStateChange"'java.a!t.event./temEvent evt( )

if'c#9.isSelecte"'((

t$.set-et'c#9.get-et'((;

private voi" r#$/temStateChange"'java.a!t.event./temEvent evt( )

if'r#$.isSelecte"'((

t$.set-et'r#$.get-et'((;



private voi" r#9/temStateChange"'java.a!t.event./temEvent evt( )

if'r#9.isSelecte"'((

t$.set-et'r#9.get-et'((;

2%& to "ispla3 the follo!ing.




int i * /nteger.parse/nt't$.get-et'((;

if'c#$.getSelecte"/tem'(.toString'(.euals'0suare0((

t9.set-et'001i7i(;

else if'c#$.getSelecte"/tem'(.toString'(.euals'0cu#e0((

t9.set-et'001i7i7i(;

private voi" j8utton9%ction&erforme"'java.a!t.event.%ctionEvent evt(

)

t$.set-et'00(;

t9.set-et'00(;

2%& to "ispla3 the follo!ing



private voi" list$alueChange"'java.s!ing.event.ListSelectionEvent evt(

)

l$.set-et'list$.getSelecte"alue'(.toString'((;

-et entr3 components:



-et ,el"< pass!or" ,el"< formatte" tet ,el"< tet area.

=o to formatterFactor3 properties of JFormatte" tet ,el".

For ,rst select "ate short.

For secon" percent an" for thir" currenc3.


t>.set-et't$.get-et'(10 01t9.get-et'(10 01t?.get-et'(10

[email protected]'(10 01tA.get-et'((;

&rogress#ar:



Change foregroun"< string painte"

private voi" j8utton$%ction&erforme"'java.a!t.event.%ctionEvent evt(

)

int value * /nteger.parse/nt't$.get-et'((;

progress.setalue'value(;

Jprogress #ar




progress.setalue'progress.getalue'(1$B(;

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