正文
java编程100个代码的简单介绍
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
用JAVA语言编写100行以上的代码，要求主要应用string类中的equal（）方法
class Person{
private String name;
private int age;
public Person(String name,int age){
this.name=name;
this.age=age;
}
public boolean equals(Object obj){
if( ! (obj instanceof Person)){
return false;
}
Person per1=this;
Person per2=(Person)obj;
boolean flag=false;
if(per1==per2){
flag=true;
}
else{
if(per1.name.equals(per2.name)per1.age==per2.age){
flag=true;
}
}
return flag;
}
public String toString(){
return "姓名java编程100个代码："+this.name+",年龄java编程100个代码："+this.age;
}
}
public class OODemo17{
public static void main(String []args){
Person p1=new Person("张三",23);
Person p2=new Person("张三",23);
System.out.println(p1.equals(p2));
Person p3=p2;
System.out.println(p2.equals(p3));
System.out.println(p1.equals("a string"));
}
}
输出结果java编程100个代码：
true
true
false
相关问答
Q1: 求个简单点的Java程序 100行左右。 需要解释。
贪吃蛇游戏 望采纳
import java.awt.Button;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.*;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class Snake extends JFrame implements KeyListener{
int Count=0;
Button[][] grid = new Button[20][20];
ArrayListPoint snake_list=new ArrayListPoint();
Point bean=new Point(-1,-1);//保存随机豆子【坐标】
int Direction = 1; //方向标志 1:上 2:下 3:左 4:右
//构造方法
public Snake()
{
//窗体初始化
this.setBounds(400,300,390,395);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridLayout f=new GridLayout(20,20);
this.getContentPane().setBackground(Color.gray);
this.setLayout(f);
//初始化20*20个按钮
for(int i=0;i20;i++)
for(int j=0;j20;j++)
{
grid[i][j]=new Button();
this.add(grid[i][j]);
grid[i][j].setVisible(false);
grid[i][j].addKeyListener(this);
grid[i][j].setBackground(Color.blue);
}
//蛇体初始化
grid[10][10].setVisible(true);
grid[11][10].setVisible(true);
grid[12][10].setVisible(true);
grid[13][10].setVisible(true);
grid[14][10].setVisible(true);
//在动态数组中保存蛇体按钮坐标【行列】信息
snake_list.add(new Point(10,10));
snake_list.add(new Point(11,10));
snake_list.add(new Point(12,10));
snake_list.add(new Point(13,10));
snake_list.add(new Point(14,10));
this.rand_bean();
this.setTitle("总分：0");
this.setVisible(true);
}
//该方法随机一个豆子，且不在蛇体上，并使豆子可见
public void rand_bean(){
Random rd=new Random();
do{
bean.x=rd.nextInt(20);//行
bean.y=rd.nextInt(20);//列
}while(snake_list.contains(bean));
grid[bean.x][bean.y].setVisible(true);
grid[bean.x][bean.y].setBackground(Color.red);
}
//判断拟增蛇头是否与自身有碰撞
public boolean is_cross(Point p){
boolean Flag=false;
for(int i=0;isnake_list.size();i++){
if(p.equals(snake_list.get(i) )){
Flag=true;break;
}
}
return Flag;
}
//判断蛇即将前进位置是否有豆子，有返回true，无返回false
public boolean isHaveBean(){
boolean Flag=false;
int x=snake_list.get(0).x;
int y=snake_list.get(0).y;
Point p=null;
if(Direction==1)p=new Point(x-1,y);
if(Direction==2)p=new Point(x+1,y);
if(Direction==3)p=new Point(x,y-1);
if(Direction==4)p=new Point(x,y+1);
if(bean.equals(p))Flag=true;
return Flag;
}
//前进一格
public void snake_move(){
if(isHaveBean()==true){//////////////有豆子吃
Point p=new Point(bean.x,bean.y);//【很重要，保证吃掉的是豆子的复制对象】
snake_list.add(0,p); //吃豆子
grid[p.x][p.y].setBackground(Color.blue);
this.Count++;
this.setTitle("总分："+Count);
this.rand_bean(); //再产生一个豆子
}else{///////////////////无豆子吃
//取原蛇头坐标
int x=snake_list.get(0).x;
int y=snake_list.get(0).y;
//根据蛇头坐标推算出拟新增蛇头坐标
Point p=null;
if(Direction==1)p=new Point(x-1,y);//计算出向上的新坐标
if(Direction==2)p=new Point(x+1,y);//计算出向下的新坐标
if(Direction==3)p=new Point(x,y-1);//计算出向左的新坐标
if(Direction==4)p=new Point(x,y+1);//计算出向右的新坐标
//若拟新增蛇头碰壁，或缠绕则游戏结束
if(p.x0||p.x19|| p.y0||p.y19||is_cross(p)==true){
JOptionPane.showMessageDialog(null, "游戏结束！");
System.exit(0);
}
//向蛇体增加新的蛇头坐标,并使新蛇头可见
snake_list.add(0,p);
grid[p.x][p.y].setVisible(true);
//删除原蛇尾坐标，使蛇尾不可见
int x1=snake_list.get(snake_list.size()-1).x;
int y1=snake_list.get(snake_list.size()-1).y;
grid[x1][y1].setVisible(false);
snake_list.remove(snake_list.size()-1);
}
}
@Override
public void keyPressed(KeyEvent e) {
if(e.getKeyCode()==KeyEvent.VK_UP Direction!=2) Direction=1;
if(e.getKeyCode()==KeyEvent.VK_DOWN Direction!=1) Direction=2;
if(e.getKeyCode()==KeyEvent.VK_LEFT Direction!=4) Direction=3;
if(e.getKeyCode()==KeyEvent.VK_RIGHT Direction!=3) Direction=4;
}
@Override
public void keyReleased(KeyEvent e) { }
@Override
public void keyTyped(KeyEvent e) { }
public static void main(String[] args) throws InterruptedException {
Snake win=new Snake();
while(true){
win.snake_move();
Thread.sleep(300);
}
}
}
Q2: Java程序，100行左右，需要运行成果图。 程序随便。 2个有追加
200多行，程序功能是输入两个数字的英文单词（20以内），输出结果，这个结果也是一个英文(就是将结果转换成英文输出)
import java.util.Scanner;
public class test{
private static String temp, tempNumA, tempNumB;
private static int geWei, shiWei, baiWei, judgeA, judgeB;
private static int number(String inputNum) {
if (inputNum.equalsIgnoreCase("zero")) {
return 0;
} else if (inputNum.equalsIgnoreCase("one")) {
return 1;
} else if (inputNum.equalsIgnoreCase("two")) {
return 2;
} else if (inputNum.equalsIgnoreCase("three")) {
return 3;
} else if (inputNum.equalsIgnoreCase("four")) {
return 4;
} else if (inputNum.equalsIgnoreCase("five")) {
return 5;
} else if (inputNum.equalsIgnoreCase("six")) {
return 6;
} else if (inputNum.equalsIgnoreCase("seven")) {
return 7;
} else if (inputNum.equalsIgnoreCase("eigth")) {
return 8;
} else if (inputNum.equalsIgnoreCase("nine")) {
return 9;
} else if (inputNum.equalsIgnoreCase("ten")) {
return 10;
} else if (inputNum.equalsIgnoreCase("eleven")) {
return 11;
} else if (inputNum.equalsIgnoreCase("twelve")) {
return 12;
} else if (inputNum.equalsIgnoreCase("thirteen")) {
return 13;
} else if (inputNum.equalsIgnoreCase("fourteen")) {
return 14;
} else if (inputNum.equalsIgnoreCase("fifteen")) {
return 15;
} else if (inputNum.equalsIgnoreCase("sixteen")) {
return 16;
} else if (inputNum.equalsIgnoreCase("seventeen")) {
return 17;
} else if (inputNum.equalsIgnoreCase("eighteen")) {
return 18;
} else if (inputNum.equalsIgnoreCase("nineteen")) {
return 19;
} else if (inputNum.equalsIgnoreCase("twenty")) {
return 20;
} else {
return -1;
}
}
private static String lessTen(int num) {
switch (num) {
case 0:
temp = "zero";
break;
case 1:
temp = "one";
break;
case 2:
temp = "two";
break;
case 3:
temp = "three";
break;
case 4:
temp = "four";
break;
case 5:
temp = "five";
break;
case 6:
temp = "six";
break;
case 7:
temp = "seven";
break;
case 8:
temp = "eight";
break;
case 9:
temp = "nine";
break;
default:
temp = "erro";
break;
}
return temp;
}
private static String moreThanTen(int num) {
if (num 20) {
switch (num) {
case 10:
temp = "ten";
break;
case 11:
temp = "eleven";
break;
case 12:
temp = "twelve";
break;
case 13:
temp = "thirteen";
break;
case 14:
temp = "fourteen";
break;
case 15:
temp = "fifteen";
break;
case 16:
temp = "sixteen";
break;
case 17:
temp = "seventeen";
break;
case 18:
temp = "eighteen";
break;
case 19:
temp = "nineteen";
break;
}
} else if (num = 20) {
switch (num) {
case 20:
temp = "twenty";
break;
case 30:
temp = "thirty";
break;
case 40:
temp = "forty";
break;
case 50:
temp = "fifty";
break;
case 60:
temp = "sixty";
break;
case 70:
temp = "seventy";
break;
case 80:
temp = "eighty";
break;
case 90:
temp = "ninety";
break;
}
}
return temp;
}
private static void outputReult(int num) {
if (num = 0 num = 9) {
System.out.println(lessTen(num));
} else if (num = 10 num = 19) {
System.out.println(moreThanTen(num));
} else if (num = 20 num = 99) {
shiWei = num / 10;
geWei = num % 10;
if (geWei == 0) {
System.out.println(moreThanTen(shiWei * 10));
} else {
System.out.println(moreThanTen(shiWei * 10) + "-"
+ lessTen(geWei));
}
} else if (num = 100 num = 400) {
baiWei = num / 100;
shiWei = num % 100 / 10;
geWei = num % 100 % 10;
if (shiWei == 0 geWei == 0) {
System.out.println(lessTen(baiWei) + " " + "hundred");
} else if (shiWei == 0 geWei != 0) {
System.out.println(lessTen(baiWei) + " " + "hundred" + " "
+ "and" + " " + lessTen(geWei));
} else if (shiWei != 0 geWei == 0) {
System.out.println(lessTen(baiWei) + " " + "hundred" + " "
+ "and" + " " + moreThanTen(shiWei * 10 + geWei));
} else {
if (shiWei == 1 geWei != 0) {
System.out.println(lessTen(baiWei) + " " + "hundred" + " "
+ "and" + " " + moreThanTen(shiWei * 10 + geWei));
} else {
System.out.println(lessTen(baiWei) + " " + "hundred" + " "
+ "and" + " " + moreThanTen(shiWei * 10) + "-"
+ lessTen(geWei));
}
}
}
}
public static void inputNumber() {
System.out.print("请输入第一个数字(数字必须小于等于20)的单词：");
tempNumA = new Scanner(System.in).next();
judgeA = number(tempNumA);
System.out.print("请输入第二个数字(数字必须小于等于20)的单词：");
tempNumB = new Scanner(System.in).next();
judgeB = number(tempNumB);
if (judgeA == -1 || judgeB == -1) {
System.out.println("你输入的数字单词不正确，请重新输入！");
System.out.println(" ");
inputNumber();
}
}
public static void main(String[] args) {
inputNumber();
System.out.print(tempNumA + " multiply " + tempNumB + " equals ");
outputReult(number(tempNumA) * number(tempNumB));
}
}
Q3: 输出1到100这100个数(分别用for,while,do_while实现)的java代码
public static void main(String[] args)
{
for (int i = 1; i = 100; i++)
{
System.out.println(i);
}
int j=1;
while (j=100)
{
System.out.println(j);
j++;
}
int k=1;
do
{
System.out.println(k);
k++;
}
while (k=100);
}
Q4: 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
Q5: 写一个JAVA程序 输出从1到100的整数
代码如下：
for (int a = 1; a=100; a++)
{
system.out.println(a);
}
/////////
int a =1;
while (a =100)
{
system.out.println(a);
a++;
}
/////////
int a = 1;
do
{
system.out.println(a);
a++;
}
while (a=100)
扩展资料：
在windows下编译java文件、执行：
1、先创建一个txt，更改为test.java。
2、编写代码，为输出为holloword。
3、找到cmd，并进行打开cmd。
4、编译java文件，输入命令为javac test.java。
5、如果没有报错，查看当前目录下是否有class文件产生。
6、执行class文件，在命令输入java test，输出为holloword。
java编程100个代码的介绍就聊到这里吧，感谢你花时间阅读本站内容，更多关于、java编程100个代码的信息别忘了在本站进行查找喔。
