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java新手代码大全话题已于 2025-06-20 00:29:23 更新
在ThreadTester.java文件中,我们可以看到这样的代码片段:java public class ThreadTester { public void printMsg() { String threadName = Thread.currentThread().getName();System.out.println("当前线程名称: " + threadName);} public static void main(String[] args) { new Thread(new Runnab...
import java.util.Scanner;public class Main {public static void main(String[] args) {Scanner sc = new Scanner(System.in);System.out.println("请输入一个四位整数:");int num = sc.nextInt(); //获取用户输入int x = num;int a = num / 1000; // 千位数num -= a * 1000; ...
这样就不用借助cmd手动编译Java程序了。public class xing{public static void main(String args[]){String star = "***";for(int i=1; i
翻译成普通Java代码是:int result;if (id > upstu.id) {result = 1;}else{if(id == upstu.id){result = 0;}else{result = -1;}}三目运算符用法:条件?如果条件满足执行:否则执行int result 这部分是声明一个变量三元运算符的格式是:条件?值1:值2当条件为真时就返回值1,当条件...
参考代码 import java.util.Arrays;public class RandomDemo {public static void main(String[] args) {int loop = 5;// 重复5次试验for (int k = 0; k < loop; k++) {int times = 0;// 循环的次数int[] ary;// 数组,存储4个随机数while (true) {times++;// 次数+1ary = new...
import java.util.Scanner;public class MilkTeaOrder { public static void main(String[] args) { Scanner scanner = new Scanner(System.in);System.out.println("欢迎来到奶茶店!");System.out.println("请选择您的口味:");System.out.println("1. 原味奶茶");System.out.println("2. 珍珠...
4.格式化输出该年月,用SimpleDateFormat类格式化日期,见下面的代码:import java.text.SimpleDateFormat;import java.util.Calendar;public class CalendarTest { / param args / public static void main(String[] args) { // TODO Auto-generated method stub //使用Calendar类处理日期 Calendar obj...
{ public static void main(String[] args){ MyThr thr1=new MyThr("Tom",50);MyThr thr2=new MyThr("Jerry",100);thr1.start();thr2.start();} } class MyThr extends Thread { int time;String name;public MyThr(String s,int n){ super(s);name=s;time=n;} public void ...
import java.awt.*;import java.awt.event.*;public class lvhaiya{ int tmp,sum,sum1,sum2=1,sum3=1;String a,b,c,d;String s="";Frame f=new Frame("计算器");private String[]name={ "0","1","2","3","4","5","6","7","8","9","+","-","*","/","=","...
假设你想要在几个不同的餐厅中随机选择一个,这里列出了几个选项:力天餐厅、北京饭店、饿着、全聚德、楼下摊煎饼。为了实现这个随机选择,你可以使用以下Java代码:首先,你需要创建一个Random对象。这里使用了System.currentTimeMillis()作为种子,以确保每次运行程序时生成的随机数序列不同。代码如下:Rand...