再上一发逻辑炸弹 不一样哦

逻辑炸弹第二系列

package midterm;

/**

*

* @author SamV

*/

import static java.lang.Math.*;

import java.util.Date;

public class LogicalBomb {

private final Date recent; //Get the recent time

private int counter;

private int randnum; //Generate the 8-d random number

private int dateval; //The date value in format yyyymmdd

private String jokeStr; //Display the joke string

LogicalBomb (){

recent = new Date();

counter = 0;

randnum = 0;

dateval = 0;

}//end constructor

//The main method

public static void main(String[] args){

LogicalBomb lb = new LogicalBomb();

lb.playjoke();

}//end main

//To let the logic bomb run:

public void playjoke(){

while(true){

generateNum();

getDateVal();

if(randnum == dateval){

//Testing code:

System.out.println("Random number: " + randnum);

System.out.println("Date value: " + dateval);

System.out.println(getJokeStr());

}//end if

}//end loop: Keep looping

}//end method

//To return the joke string.

private String getJokeStr(){

jokeStr = "It is your lucky day!\nThe count is: ";

String format = "[";

if(counter >= 1000)

format += (counter + "]");

else if(counter >= 100)

format += ("0" + counter + "]");

else if(counter >= 10)

format += ("00" + counter + "]");

else

format += ("000" + counter + "]");

jokeStr += format;

return jokeStr;

}//end method

//To generate number and increase the counter.

private void generateNum(){

randnum = (int)(random() * 90000000 + 10000000);

counter ++;

//Because counter is a 4-digit number.

if(counter > 0)

counter = counter % 10000;

else

counter = 0;

/*Because counter may be more than int value and

goes negative. In this case, just make counter 0.*/

}//end method

private void getDateVal(){

dateval = getYear() * 10000 + getMonth() * 100 + getDate();

}//end method

private int getYear(){

return recent.getYear() + 1900;

}//end method: Return the current year.

private int getMonth(){

return recent.getMonth() + 1;

}//end method: Get current month

private int getDate(){

return recent.getDate();

}//end method: Get current date

}//end class: Making a logical bomb.