还有好多题都不会

int count_5=0;
int count_7=0;
for(int i=1;i<1000;i++){
if(i%3==2){
System.out.println("3::除3余2:"+i);
count_3++;
}
if(i%5==3){
System.out.println("5::除5余3:"+i);
count_5++;
}
if(i%7==4){
System.out.println("7::除7余4:"+i);
count_7++;
}
}
System.out.println("除3余2个数:"+count_3+);
System.out.println("除5余3个数:"+count_5+);
System.out.println("除7余4个数:"+count_7+);