publicclassPrimeNumber{

privateintcount=0;

privateintn;

//用于判斷一個數是不是素數

publicbooleanjudge(intnumber){

for(inti=2;i<=Math.sqrt(number);i++){

if(number%i==0){

returnfalse;

}

}

returntrue;

}

//用于處理某一范圍的數據

publicvoidhandle(intstartNumber,intendNumber){

for(inti=startNumber;i<=endNumber;i++){

if(this.judge(i)==true){

this.count++;

}

}

}

publicvoidshow(){

System.out.println("count="+count);

}

}

=====================================================================

packagebbb;

publicclassPrimeNumberTest{

publicstaticvoidmain(String[]args){

PrimeNumberpn=newPrimeNumber();

pn.handle(101,200);

pn.show();

}

}