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import java.util.Arrays;

public class Main {
    public static void main(String[] args) throws Exception {
        int[] ary = {1, 2, 3, 4, 5, 6};
        int[] ary1 = {1, 2, 3, 4, 5, 6};
        int[] ary2 = {1, 2, 3, 4};
        System.out.println("Are array ary and array ary1 equal? : "
        + Arrays.equals(ary, ary1));
        System.out.println("Are array ary and array ary2 equal? : "
        + Arrays.equals(ary, ary2));
    }
}

Are array ary and array ary1 equal? : true
Are array ary and array ary2 equal? : false