Koj tsim lub pob hauv Java li cas?

2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47

Java JButton Piv txwv

1. import javax.swing.*;
2. Public class ButtonExample {
3. public static void main(String args) {
4. JFrame f=new JFrame(" Khawm Piv txwv");
5. JButton b=new JButton("Nyem qhov no");
6. b.setBounds(50, 100, 95, 30);
7. f.add(b);
8. f.setSize(400, 400);

Tom qab ntawd, dab tsi yog lub pob hauv Java?

Khawm yog ib qho kev tswj xyuas uas muaj daim ntawv lo thiab tsim ib qho kev tshwm sim thaum nias. Thaum a khawm yog nias thiab tso tawm, AWT xa ib qho piv txwv ntawm ActionEvent mus rau khawm , los ntawm kev hu rau processEvent ntawm lub khawm . Daim ntawv thov tuaj yeem siv tau khawm kev hais kom ua raws li kev xa xov.

Tsis tas li ntawd, dab tsi yog qhov txawv constructors ntawm Button tivthaiv? Cov ob tug constructors yog: Khawm () // Tsim a Khawm tsis muaj daim ntawv lo. Khawm (Txoj hlua daim ntawv lo) // Tsim a Khawm nrog rau daim ntawv teev npe. Thaum tus neeg siv nias rau ntawm a Khawm khoom ib qho kev tshwm sim yog generated.

Kuj kom paub, Kuv yuav ntxiv lub pob rau JFrame li cas?

Ntxiv cov nyees khawm thiab siv cov neeg mloog ua haujlwm

1. pob javatutorial. net;
2. import javax. viav vias. ImageIcon;
3. import javax. viav vias. JButton;
4. import javax. viav vias. JFrame;
5. public class SimpleJButton {
6. SimpleJButton(){
7. JFrame f=new JFrame("Kwm Example");
8. JButton b=new JButton("Play", new ImageIcon("play.png"));

Dab tsi yog combobox hauv Java?

Hauv Java , koj tuaj yeem tsim combo lub thawv . A combo lub thawv yog kev sib txuas ntawm cov ntawv sau thiab a nco-down sau los ntawm cov neeg siv tuaj yeem xaiv tus nqi. Yog hais tias cov ntawv nyeem-field feem ntawm kev tswj yog kho tau, tus neeg siv tuaj yeem nkag mus rau tus nqi hauv daim teb lossis kho tus nqi uas tau muab los ntawm nco-down lis.