求java经典小程序代码

代码如下：

public class HelloWorld {

  public static void main(String []args) {

int a = 3, b = 7 ;

         Systemoutprintln("Hello World!");

  }

public static int f(int a, int b){

     return aa + ab + bb;

}

}

结果如下：

开发小程序的步骤如下：

 1 注册开发者账号：在微信公众平台或支付宝开放平台注册开发者账号。

2 下载开发工具或使用第三方小程序搭建平台：微信小程序需要使用微信开发者工具，支付宝小程序需要使用支付宝小程序开发者工具。

 3 创建小程序项目：在开发工具中创建小程序项目，填写小程序名称、AppID等信息。

 4 设计小程序界面：使用设计工具进行小程序界面设计，如Sketch、Adobe XD等。

 5 编写小程序代码：使用JavaScript或TypeScript编写小程序代码，实现小程序的功能。

 6 调试和测试：在开发工具中进行调试和测试，确保小程序的功能正常。

 7 提交审核：将小程序提交审核，等待审核通过后发布上线。

 8 发布上线：审核通过后，将小程序发布上线，供用户使用。

使用编程开发小程序需要有一定的编程经验和开发经验，熟悉前端开发技术和框架，如HTML、CSS、Vuejs等，如果没有代码经验，可以选择第三方无代码小程序平台。

// My car shopjava

import javaawt;

import javaawtevent;

import javaxswing;

import javaxswingborder;

public class carshop extends JFrame

{

// JPanel to hold all pictures

private JPanel windowJPanel;

private String[] cars = { "","阿斯顿马丁", "美洲虎", "凯迪拉克",

"罗孚", "劳斯莱斯","别克"};

private int[] jiage = { 0,150000, 260000, 230000,

140000, 290000, 150000};

// JLabels for first snack shown

private JLabel oneJLabel;

private JLabel oneIconJLabel;

// JLabels for second snack shown

private JLabel twoJLabel;

private JLabel twoIconJLabel;

// JLabels for third snack shown

private JLabel threeJLabel;

private JLabel threeIconJLabel;

// JLabels for fourth snack shown

private JLabel fourJLabel;

private JLabel fourIconJLabel;

// JLabels for fifth snack shown

private JLabel fiveJLabel;

private JLabel fiveIconJLabel;

// JLabels for sixth snack shown

private JLabel sixJLabel;

private JLabel sixIconJLabel;

// JTextField for displaying snack price

private JTextArea displayJTextArea;

// JLabel and JTextField for user input

private JLabel inputJLabel;

private JComboBox selectCountryJComboBox;

private JLabel inputJLabel2;

private JTextField inputJTextField2;

// JButton to enter user input

private JButton enterJButton;

//JButton to clear the components

private JButton clearJButton;

// no-argument constructor

public carshop()

{

createUserInterface();

}

// create and position GUI components; register event handlers

private void createUserInterface()

{

// get content pane for attaching GUI components

Container contentPane = getContentPane();

// enable explicit positioning of GUI components

contentPanesetLayout( null );

// set up windowJPanel

windowJPanel = new JPanel();

windowJPanelsetBounds( 10, 20, 340, 200 );

windowJPanelsetBorder( new LineBorder( ColorBLACK ) );

windowJPanelsetLayout( null );

contentPaneadd( windowJPanel );

// set up oneIconJLabel

oneIconJLabel = new JLabel();

oneIconJLabelsetBounds( 10, 20, 100, 65 );

oneIconJLabelsetIcon( new ImageIcon( "images/阿斯顿马丁jpg" ) );

windowJPaneladd( oneIconJLabel );

// set up oneJLabel

oneJLabel = new JLabel();

oneJLabelsetBounds( 10, 60, 100, 70 );

oneJLabelsetText( "阿斯顿马丁" );

oneJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( oneJLabel );

// set up twoIconJLabel

twoIconJLabel = new JLabel();

twoIconJLabelsetBounds( 120, 20, 100, 65 );

twoIconJLabelsetIcon( new ImageIcon( "images/美洲虎jpg" ) );

windowJPaneladd( twoIconJLabel );

// set up twoJLabel

twoJLabel = new JLabel();

twoJLabelsetBounds( 110, 60, 100, 70 );

twoJLabelsetText( "美洲虎" );

twoJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( twoJLabel );

// set up threeIconJLabel

threeIconJLabel = new JLabel();

threeIconJLabelsetBounds( 230, 20, 100, 65 );

threeIconJLabelsetIcon( new ImageIcon(

"images/凯迪拉克jpg" ) );

windowJPaneladd( threeIconJLabel );

// set up threeJLabel

threeJLabel = new JLabel();

threeJLabelsetBounds( 230, 60, 100, 70);

threeJLabelsetText( "凯迪拉克" );

threeJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( threeJLabel );

// set up fourIconJLabel

fourIconJLabel = new JLabel();

fourIconJLabelsetBounds( 10, 100, 100, 65 );

fourIconJLabelsetIcon( new ImageIcon( "images/罗孚jpg" ) );

windowJPaneladd( fourIconJLabel );

// set up fourJLabel

fourJLabel = new JLabel();

fourJLabelsetBounds( 10, 150, 50, 70 );

fourJLabelsetText( "罗孚" );

fourJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( fourJLabel );

// set up fiveIconJLabel

fiveIconJLabel = new JLabel();

fiveIconJLabelsetBounds( 120, 100, 100, 65 );

fiveIconJLabelsetIcon( new ImageIcon(

"images/劳斯莱斯jpg" ) );

windowJPaneladd( fiveIconJLabel );

// set up fiveJLabel

fiveJLabel = new JLabel();

fiveJLabelsetBounds( 110, 150, 100, 70 );

fiveJLabelsetText( "劳斯莱斯" );

fiveJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( fiveJLabel );

// set up sixIconJLabel

sixIconJLabel = new JLabel();

sixIconJLabelsetBounds( 230, 100, 100, 65 );

sixIconJLabelsetIcon( new ImageIcon( "images/别克jpg" ) );

windowJPaneladd( sixIconJLabel );

// set up sixJLabel

sixJLabel = new JLabel();

sixJLabelsetBounds( 230, 150, 100, 70 );

sixJLabelsetText( "别克" );

sixJLabelsetHorizontalAlignment( JLabelCENTER );

windowJPaneladd( sixJLabel );

// set up enterJButton

enterJButton = new JButton();

enterJButtonsetBounds( 390, 160, 135, 30 );

enterJButtonsetText( "Enter" );

contentPaneadd( enterJButton );

enterJButtonaddActionListener(

new ActionListener() // anonymous inner class

{

// event handler called when enterJButton is clicked

public void actionPerformed( ActionEvent event )

{

enterJButtonActionPerformed( event );

}

} // end anonymous inner class

); // end call to addActionListener

// set up clearJButton

clearJButton = new JButton();

clearJButtonsetBounds( 390, 200, 135, 30 );

clearJButtonsetText( "Clear" );

contentPaneadd( clearJButton );

// set up inputJLabel

inputJLabel = new JLabel();

inputJLabelsetBounds( 390, 25, 135, 25 );

inputJLabelsetText( "Please make selection:" );

contentPaneadd( inputJLabel );

selectCountryJComboBox = new JComboBox( cars );

selectCountryJComboBoxsetBounds( 390, 50, 135, 21 );

selectCountryJComboBoxsetMaximumRowCount( 3 );

contentPaneadd( selectCountryJComboBox );

// set up inputJTextField

inputJLabel2 = new JLabel();

inputJLabel2setBounds( 390, 80, 150, 20 );

inputJLabel2setText( "Input the Numble:" );

contentPaneadd( inputJLabel2 );

// set up inputJTextField

inputJTextField2 = new JTextField();

inputJTextField2setBounds( 390, 100, 135, 25 );

inputJTextField2setHorizontalAlignment( JTextFieldRIGHT );

contentPaneadd( inputJTextField2 );

clearJButtonaddActionListener(

new ActionListener() // anonymous inner class

{

// event handler called when clearJButton is clicked

public void actionPerformed( ActionEvent event )

{

clearJButtonActionPerformed( event );

}

} // end anonymous inner class

);

// set up displayJTextField

displayJTextArea = new JTextArea();

displayJTextAreasetBounds( 10, 237,515, 70 );

displayJTextAreasetEditable( false );

contentPaneadd( displayJTextArea );

// set properties of application's window

setTitle( "My car Shop" ); // set title bar string

setSize( 550, 360 ); // set window size

setVisible( true ); // display window

} // end method createUserInterface

private void clearJButtonActionPerformed( ActionEvent event )

{

// clear the JTextFields

inputJTextField2setText( "" );

displayJTextAreasetText("");

} // end method clearJButtonActionPerformed

private void enterJButtonActionPerformed( ActionEvent event )

{

double z;

double c;

int x;

int y;

x=selectCountryJComboBoxgetSelectedIndex();

y=IntegerparseInt(inputJTextField2getText());

double discountRate;

int amount = IntegerparseInt( inputJTextField2getText());

switch (amount/5)

{

case 0:

discountRate = 0;

break;

case 1:

discountRate = 1;

break;

case 2:

discountRate = 2;

break;

case 3:

discountRate = 3;

break;

default:

discountRate = 4;

} // end switch statement

c=1-discountRate/100;

z=jiage[x]yc;

displayJTextAreaappend("你选择的是："+cars[x]+"；"+

"它的单价是："+jiage[x]+"；" +"你购买该产品的数量是："+y+"，" +"\n"+"该数量的折扣是："

+discountRate + " %"+"；"+"本次消费的总价格是："+z+"元"+"!"+"\n");

}

public static void main( String args[] )

{

carshop application = new carshop();

applicationsetDefaultCloseOperation( JFrameEXIT_ON_CLOSE );

} // end method main

} // end class carshop

appbaseGet是异步 *** 作

下边 consolelog(thatdatauserInfo)//这里打印undefine

打印时 ，get请求响应函数还没返回

用setTimeout给下边打印，加个延时就能打印了

微信版本升级后，打开微信，点击底部的“发现”这个菜单项，就会发现升级后的“发现”菜单里，增加了“小程序”这样一个功能。

2点击打开小程序后，可以看到有附近的小程序和我的小程序，附近的小程序是所在定位周边的小程序。

下面的小程序列表可以看到的是我们之前打开过的一些小程序，如果有自己觉得很好用的小程序就可以点击左上角，添加到我的小程序里面。

3微信小程序还有具有搜索功能，打开搜索页面可以输入想要找的小程序。

Private Sub Command1_Click()

Dim a As Single

Dim b As String

a = Val(Text1Text)

b = 2 Sqr((05 a) ^ 2 2 / 3)

Text2Text = b

End Sub

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