update,

_resources/it114105/itp3914/Lab08/Ex5b.java

@@ -0,0 +1,26 @@
+
+public class Ex5b {
+    public static void main(String [ ] args) {
+        int times = 0;
+		int count=1;
+		System.out.print(2);  // 2 is the first prime number
+		int num=2;
+		while (count < 20) {
+			num++;			// try next number
+			boolean isPrime=true;
+			for (int i=2; i<num; i++) {
+                times++;
+				if (num%i == 0 ){   	// divisible by i
+					isPrime = false;    // not a prime
+                    break;
+                }
+            }
+			if (isPrime) {
+				count++;	// one more prime is found
+				System.out.print(", " + num);
+			}
+		}
+		System.out.println("\nDone");
+        System.out.println("Total calculation = " + times);
+	}
+}