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java答题小程序代码 java答题软件
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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 ;
System.out.println("Hello World!");
}
public static int f(int a, int b){
return a*a + a*b + b*b;
}
}
结果如下：
相关问答
Q1: 一般答题类的微信小程序有多少行代码
一般来说，根据你的描述得有后台还有接口，后台一般使用java或者PHP，有的还有nodejs、Python什么的；
小程序的每个页面又包含js、xml\json\css这些，一个大功能至少三个模块，
给你看下一个截图，在小程序开发者论坛下载的一个题库类的
这只是部分目录代码，多少行代码大致算25个目录，每页500行代码，算上每个页面都有的4个文件
25*500*4=50000，所以得5W行代码了吧
刚好我有下载到这个题库的😆，写的望采纳
Q2: java小程序源代码，简单点的，100多行，谁有啊？？
// My car shop.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
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
contentPane.setLayout( null );
// set up windowJPanel
windowJPanel = new JPanel();
windowJPanel.setBounds( 10, 20, 340, 200 );
windowJPanel.setBorder( new LineBorder( Color.BLACK ) );
windowJPanel.setLayout( null );
contentPane.add( windowJPanel );
// set up oneIconJLabel
oneIconJLabel = new JLabel();
oneIconJLabel.setBounds( 10, 20, 100, 65 );
oneIconJLabel.setIcon( new ImageIcon( "images/阿斯顿马丁.jpg" ) );
windowJPanel.add( oneIconJLabel );
// set up oneJLabel
oneJLabel = new JLabel();
oneJLabel.setBounds( 10, 60, 100, 70 );
oneJLabel.setText( "阿斯顿马丁" );
oneJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( oneJLabel );
// set up twoIconJLabel
twoIconJLabel = new JLabel();
twoIconJLabel.setBounds( 120, 20, 100, 65 );
twoIconJLabel.setIcon( new ImageIcon( "images/美洲虎.jpg" ) );
windowJPanel.add( twoIconJLabel );
// set up twoJLabel
twoJLabel = new JLabel();
twoJLabel.setBounds( 110, 60, 100, 70 );
twoJLabel.setText( "美洲虎" );
twoJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( twoJLabel );
// set up threeIconJLabel
threeIconJLabel = new JLabel();
threeIconJLabel.setBounds( 230, 20, 100, 65 );
threeIconJLabel.setIcon( new ImageIcon(
"images/凯迪拉克.jpg" ) );
windowJPanel.add( threeIconJLabel );
// set up threeJLabel
threeJLabel = new JLabel();
threeJLabel.setBounds( 230, 60, 100, 70);
threeJLabel.setText( "凯迪拉克" );
threeJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( threeJLabel );
// set up fourIconJLabel
fourIconJLabel = new JLabel();
fourIconJLabel.setBounds( 10, 100, 100, 65 );
fourIconJLabel.setIcon( new ImageIcon( "images/罗孚.jpg" ) );
windowJPanel.add( fourIconJLabel );
// set up fourJLabel
fourJLabel = new JLabel();
fourJLabel.setBounds( 10, 150, 50, 70 );
fourJLabel.setText( "罗孚" );
fourJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( fourJLabel );
// set up fiveIconJLabel
fiveIconJLabel = new JLabel();
fiveIconJLabel.setBounds( 120, 100, 100, 65 );
fiveIconJLabel.setIcon( new ImageIcon(
"images/劳斯莱斯.jpg" ) );
windowJPanel.add( fiveIconJLabel );
// set up fiveJLabel
fiveJLabel = new JLabel();
fiveJLabel.setBounds( 110, 150, 100, 70 );
fiveJLabel.setText( "劳斯莱斯" );
fiveJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( fiveJLabel );
// set up sixIconJLabel
sixIconJLabel = new JLabel();
sixIconJLabel.setBounds( 230, 100, 100, 65 );
sixIconJLabel.setIcon( new ImageIcon( "images/别克.jpg" ) );
windowJPanel.add( sixIconJLabel );
// set up sixJLabel
sixJLabel = new JLabel();
sixJLabel.setBounds( 230, 150, 100, 70 );
sixJLabel.setText( "别克" );
sixJLabel.setHorizontalAlignment( JLabel.CENTER );
windowJPanel.add( sixJLabel );
// set up enterJButton
enterJButton = new JButton();
enterJButton.setBounds( 390, 160, 135, 30 );
enterJButton.setText( "Enter" );
contentPane.add( enterJButton );
enterJButton.addActionListener(
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();
clearJButton.setBounds( 390, 200, 135, 30 );
clearJButton.setText( "Clear" );
contentPane.add( clearJButton );
// set up inputJLabel
inputJLabel = new JLabel();
inputJLabel.setBounds( 390, 25, 135, 25 );
inputJLabel.setText( "Please make selection:" );
contentPane.add( inputJLabel );
selectCountryJComboBox = new JComboBox( cars );
selectCountryJComboBox.setBounds( 390, 50, 135, 21 );
selectCountryJComboBox.setMaximumRowCount( 3 );
contentPane.add( selectCountryJComboBox );
// set up inputJTextField
inputJLabel2 = new JLabel();
inputJLabel2.setBounds( 390, 80, 150, 20 );
inputJLabel2.setText( "Input the Numble:" );
contentPane.add( inputJLabel2 );
// set up inputJTextField
inputJTextField2 = new JTextField();
inputJTextField2.setBounds( 390, 100, 135, 25 );
inputJTextField2.setHorizontalAlignment( JTextField.RIGHT );
contentPane.add( inputJTextField2 );
clearJButton.addActionListener(
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();
displayJTextArea.setBounds( 10, 237,515, 70 );
displayJTextArea.setEditable( false );
contentPane.add( 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
inputJTextField2.setText( "" );
displayJTextArea.setText("");
} // end method clearJButtonActionPerformed
private void enterJButtonActionPerformed( ActionEvent event )
{
double z;
double c;
int x;
int y;
x=selectCountryJComboBox.getSelectedIndex();
y=Integer.parseInt(inputJTextField2.getText());
double discountRate;
int amount = Integer.parseInt( inputJTextField2.getText());
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]*y*c;
displayJTextArea.append("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();
application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
} // end method main
} // end class carshop
Q3: 求一个随机出题的小程序 用java语言编写
package ccut.lxn.BaiduKnows;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Random;
public class RandomQuestion {
public static void main(String[] args) {
Random random = new Random();// 声明实例化一个random对象。
int a = random.nextInt(50);// 随机出现0-50间的数字。
int b = random.nextInt(50);
boolean flag = random.nextBoolean();
if (flag) {
System.out.print(a + " + " + b + " = ");
BufferedReader br = new BufferedReader(new InputStreamReader(
System.in));// 从键盘上输入字符
try {// 抛出异常
String str = br.readLine();// 按字符串接收，接收键盘上输入的字符
if (str.matches("\\d+")) {// 正则表达式，为了当你输入除整数外的其他字符时，报错。
int result = Integer.parseInt(str);// 把输入的字符串转成int型
if (result == a + b) {
System.out.println("right");
} else {
System.out.println("error");
}
} else {
System.out.println("请输入数字！");
}
} catch (Exception e) {
System.out.println("出现错误：-----" + e.toString());
}
} else {
System.out.print(a + " - " + b + " = ");
BufferedReader br = new BufferedReader(new InputStreamReader(
System.in));// 从键盘上输入字符
try {// 抛出异常
String str = br.readLine();// 按字符串接收，接收键盘上输入的字符
if (str.matches("\\d+")) {// 正则表达式，为了当你输入除整数外的其他字符时，报错。
int result = Integer.parseInt(str);// 把输入的字符串转成int型
if (result == a - b) {
System.out.println("right");
} else {
System.out.println("error");
}
} else {
System.out.println("请输入数字！");
}
} catch (Exception e) {
System.out.println("出现错误：-----" + e.toString());
}
}
}
}
ps:这是刚刚敲出来的，本来想优化下代码的，但是现在我要忙别的了（万分火急的），sorry，希望采纳，给我个鼓励。
Q4: JAVA小程序代码问题，求高手
很简单啊，你这是个while循环，catch到这个exception以后提示重新输入，然后因为上一次的输入结果还在，所以当然还是会显示是高还是低了啊
应该改成先输入数字，再判断是高还是低
while(correctCount==0){
try{
userString=JOptionPane.showInputDialog("Start guessing, it's a number between 1 and 1000...");
userNumber=Integer.parseInt(userString);}
catch(NumberFormatException ex){
JOptionPane.showMessageDialog(null, "Please input a number",JOptionPane.WARNING_MESSAGE);
continue;
}
if((userNumberrightNumber)(userNumber1000)){
JOptionPane.showMessageDialog(null,"too high!");
count++;
}
else if((userNumberrightNumber)(userNumber0)){
JOptionPane.showMessageDialog(null,"too low!");
count++;
}
else if(userNumber0||userNumber1000)
JOptionPane.showMessageDialog(null,"Stupid Guy",JOptionPane.WARNING_MESSAGE);
else
JOptionPane.showMessageDialog(null, "Please input a number",JOptionPane.WARNING_MESSAGE);
if (userNumber==rightNumber){
count++;
correctCount++;
}
}
Q5: 求java小程序代码，500行左右。。大作业用。追加50
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class mypanel extends Panel implements MouseListener
{
int chess[][] = new int[11][11];
boolean Is_Black_True;
mypanel()
{
Is_Black_True = true;
for(int i = 0;i 11;i++)
{
for(int j = 0;j 11;j++)
{
chess[i][j] = 0;
}
}
addMouseListener(this);
setBackground(Color.BLUE);
setBounds(0, 0, 360, 360);
setVisible(true);
}
public void mousePressed(MouseEvent e)
{
int x = e.getX();
int y = e.getY();
if(x 25 || x 330 + 25 ||y 25 || y 330+25)
{
return;
}
if(chess[x/30-1][y/30-1] != 0)
{
return;
}
if(Is_Black_True == true)
{
chess[x/30-1][y/30-1] = 1;
Is_Black_True = false;
repaint();
Justisewiner();
return;
}
if(Is_Black_True == false)
{
chess[x/30-1][y/30-1] = 2;
Is_Black_True = true;
repaint();
Justisewiner();
return;
}
}
void Drawline(Graphics g)
{
for(int i = 30;i = 330;i += 30)
{
for(int j = 30;j = 330; j+= 30)
{
g.setColor(Color.WHITE);
g.drawLine(i, j, i, 330);
}
}
for(int j = 30;j = 330;j += 30)
{
g.setColor(Color.WHITE);
g.drawLine(30, j, 330, j);
}
}
void Drawchess(Graphics g)
{
for(int i = 0;i 11;i++)
{
for(int j = 0;j 11;j++)
{
if(chess[i][j] == 1)
{
g.setColor(Color.BLACK);
g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);
}
if(chess[i][j] == 2)
{
g.setColor(Color.WHITE);
g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);
}
}
}
}
void Justisewiner()
{
int black_count = 0;
int white_count = 0;
int i = 0;
for(i = 0;i 11;i++)//横向判断
{
for(int j = 0;j 11;j++)
{
if(chess[i][j] == 1)
{
black_count++;
if(black_count == 5)
{
JOptionPane.showMessageDialog(this, "黑棋胜利");
Clear_Chess();
return;
}
}
else
{
black_count = 0;
}
if(chess[i][j] == 2)
{
white_count++;
if(white_count == 5)
{
JOptionPane.showMessageDialog(this, "白棋胜利");
Clear_Chess();
return;
}
}
else
{
white_count = 0;
}
}
}
for(i = 0;i 11;i++)//竖向判断
{
for(int j = 0;j 11;j++)
{
if(chess[j][i] == 1)
{
black_count++;
if(black_count == 5)
{
JOptionPane.showMessageDialog(this, "黑棋胜利");
Clear_Chess();
return;
}
}
else
{
black_count = 0;
}
if(chess[j][i] == 2)
{
white_count++;
if(white_count == 5)
{
JOptionPane.showMessageDialog(this, "白棋胜利");
Clear_Chess();
return;
}
}
else
{
white_count = 0;
}
}
}
for(i = 0;i 7;i++)//左向右斜判断
{
for(int j = 0;j 7;j++)
{
for(int k = 0;k 5;k++)
{
if(chess[i + k][j + k] == 1)
{
black_count++;
if(black_count == 5)
{
JOptionPane.showMessageDialog(this, "黑棋胜利");
Clear_Chess();
return;
}
}
else
{
black_count = 0;
}
if(chess[i + k][j + k] == 2)
{
white_count++;
if(white_count == 5)
{
JOptionPane.showMessageDialog(this, "白棋胜利");
Clear_Chess();
return;
}
}
else
{
white_count = 0;
}
}
}
}
for(i = 4;i 11;i++)//右向左斜判断
{
for(int j = 6;j = 0;j--)
{
for(int k = 0;k 5;k++)
{
if(chess[i - k][j + k] == 1)
{
black_count++;
if(black_count == 5)
{
JOptionPane.showMessageDialog(this, "黑棋胜利");
Clear_Chess();
return;
}
}
else
{
black_count = 0;
}
if(chess[i - k][j + k] == 2)
{
white_count++;
if(white_count == 5)
{
JOptionPane.showMessageDialog(this, "白棋胜利");
Clear_Chess();
return;
}
}
else
{
white_count = 0;
}
}
}
}
}
void Clear_Chess()
{
for(int i=0;i11;i++)
{
for(int j=0;j11;j++)
{
chess[i][j]=0;
}
}
repaint();
}
public void paint(Graphics g)
{
Drawline(g);
Drawchess(g);
}
public void mouseExited(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
}
class myframe extends Frame implements WindowListener
{
mypanel panel;
myframe()
{
setLayout(null);
panel = new mypanel();
add(panel);
panel.setBounds(0,23, 360, 360);
setTitle("单人版五子棋");
setBounds(200, 200, 360, 383);
setVisible(true);
addWindowListener(this);
}
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
public void windowDeactivated(WindowEvent e){}
public void windowActivated(WindowEvent e){}
public void windowOpened(WindowEvent e){}
public void windowClosed(WindowEvent e){}
public void windowIconified(WindowEvent e){}
public void windowDeiconified(WindowEvent e){}
}
public class mywindow
{
public static void main(String argc [])
{
myframe f = new myframe();
}
}
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