refactor: extract method isEven from method m1

Author: rodrigo-brito

src/p2/A.java

@@ -1,8 +1,12 @@
 package p2;
 
 public class A {
+  public boolean isEven(int v) {
+    return v % 2 == 0;
+  }
+
   public void m1(int v) {
-    if (v % 2 == 0) {
+    if (this.isEven(v)) {
       System.out.println("even");
     } else {
       System.out.println("odd");