Java 从数组查找相同元素

public class HelloWorld {
   public static void main(String a[]) {
      int[] arr1 = {4,7,3,9,2};
      int[] arr2 = {3,2,12,9,40,32,4};

      for(int i = 0;i<arr1.length;i++) {
         for(int j = 0;j<arr2.length;j++) {
            if(arr1[i]==arr2[j]) {
               System.out.println(arr1[i]);
            }
         }
      }
   }
}