first commit

src/Example08.java

@@ -0,0 +1,11 @@
+public class Example08 {
+    public static void main(String[] args) {
+        int num = 20;
+
+        if (num % 2 == 0) {
+            System.out.println("num是一个偶数");
+        } else {
+            System.out.println("num是一个奇数");
+        }
+    }
+}