使用Objects.equals测试是否相等

import java.util.Objects;
/*
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*/


public class Main {

  public static void main(String[] args) {

    // Test for equality

    boolean isEqual = Objects.equals(null, null);

    System.out.println("null is equal to null: " + isEqual);


    isEqual = Objects.equals(null, "XYZ");

    System.out.println("null is equal to XYZ: " + isEqual);


  }


}