随笔分类 -  编程技巧

摘要：public class calc{public String oper(float a,float b,char c){float add=a+b;float jian=a-b;float chen=a*b;float chu=a/b;switch(c){case '+':return "想加的结果为："+add;case '-':return "想减的结果为："+jian;case '*':return "想乘的结果为："+chen;case '/':return & 阅读全文

摘要：public class ThreadTest1 {private int j;public static void main(String args[]){ThreadTest1 tt=new ThreadTest1();Inc inc=tt.new Inc();Dec dec=tt.new Dec();for(int i=0;i<2;i++){Thread t= new Thread(inc);t.start();t=new Thread(dec);t.start();}}private synchronized void inc(){j++;System.out.println(T 阅读全文

摘要：线程范围内使用自己独立的数据：import java.util.Random;public class ThreadScopeShareData{private static int data=0;private static Map<Thread,Integer> threadData=new HashMap<Thread,Integer>();public static void main(String[] args){for(int i=0;i<2;i++){new Thread(new Runnable(){@Overridepublic void run 阅读全文

摘要：import java.util.Timer;import java.util.TimerTask;import java.util.Date;public class jzw{public static void main(String[] args){new Timer().schedule(new TimerTask(){@Overridepublic void run(){System.out.println("Bombing!");}},10000,3000);//过3秒炸一下//10秒炸一下/*while(true){System.out.println(new 阅读全文

摘要：线程一个通过继承Thread来实现，一个通过实现Runnable接口的Run方法来实现public class First{public static void main(String[] args){Thread thread =new Thread(){@Overridepublic void run(){while(true){try{Thread.sleep(1000);}catch(InterruptedException e){e.printStackTrace();}System.out.println("1:"+Thread.currentThread(). 阅读全文