用java输出1~100内的质数

可以的，以下是Java代码：

public class PrimeNumbers {
public static void main(String[] args) {
int i = 0;
int num = 0;
String primeNumbers = "";

for (i = 1; i <= 100; i++) {
int counter = 0;
for (num = i; num >= 1; num--) {
if (i % num == 0) {
counter = counter + 1;
}
}
if (counter == 2) {
primeNumbers = primeNumbers + i + " ";
}
}
System.out.println("1到100内的质数为：");
System.out.println(primeNumbers);
}
}