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java小程序源代码夸人,java恶搞小程序
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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: java 小程序源代码
求素数，比较经典的，下面是代码及注释
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public class Sushu {
/**
* 判断一个数是不是素数
* @param a 被判断的数
* @return 是素数返回真
*/
public boolean isSuhu(int a){
boolean isSushu=true;
//根据素数的性质判断一个数是否为素数
for(int i=2;ia;i++){
if(a%i==0){
isSushu=false;
break;
}
}
return isSushu;
}
/**
* 判断连续若干个数中那些是素数
* @param start 起始数
* @param end 终止数
*/
public void selectSushu(int start,int end){
//判断一串数中那些为素数，并将结果打印出来
for(int i=start;i=end;i++){
if(isSuhu(i)){
System.out.println(i);
}
}
}
public static void main(String []args){
//定义起始位置和终止位置
int start=1;
int end=100;
//声明变量
Sushu s=new Sushu();
//调用方法
s.selectSushu(start, end);
}
}
Q2: 求一个java applet小程序的源代码
import java.applet.Applet;
import java.awt.Button;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.TextField;
import java.awt.event.ActionEvent;
public class Nicki extends Applet{
private static final long serialVersionUID = 1L;
private Button ok;
private int num=32;
private int resu=0;
private boolean isRig=false;
private TextField iPut;
public Nicki(){
this.setLayout(null);
ok=new Button("OK");
ok.setActionCommand(getName());
ok.setBounds(150, 150, 40, 20);
iPut=new TextField();
this.add(iPut);
iPut.setBounds(100, 150, 40, 20);
this.add(ok);
ok.addActionListener(new ButtonAction(this));
}
public void paint(Graphics g){
g.setColor(Color.white);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
g.setColor(Color.BLACK);
g.drawString("Please guess a number ", 10, 20);
g.drawString("between 1 and 100", 10, 40);
if(isRig==falseresu!=0){
if(resunum){
g.drawString(""+resu+" is too big !", 10, 100);
}else if(resunum){
g.drawString(resu+"is too small !", 10, 100);
}
}else if(isRig==true){
g.setColor(Color.GREEN);
g.drawString("Yes,"+resu+" is the right number", 10, 80);
g.drawString("Your are great! ", 10, 100);
g.setColor(Color.red);
g.drawString(resu+"!", 70, 120);
}
iPut.setText("");
g.drawString("Input the number：", 0, 150);
}
public void ButtonActionPerformed(ActionEvent e){
if(e.getActionCommand().equals("panel0")){
resu=Integer.parseInt(iPut.getText());
if(num==resu){
isRig=true;
}else{
isRig=false;
}
repaint();
}
}
}
class ButtonAction implements java.awt.event.ActionListener{
Nicki su;
public ButtonAction(Nicki bun){
this.su=bun;
}
public void actionPerformed(ActionEvent e) {
su.ButtonActionPerformed(e);
}
}
