How is ‘not equal to’ represented in Java?

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    2024-01-25T21:36:08+00:00

    In Java, the "not equal to" operation is represented by the operator !=. This operator is used to compare two values or expressions to determine if they are not equal. If the values are not equal, the operator returns true; otherwise, it returns false.

    Here are some examples of how to use the != operator in Java:

    1. Comparing Primitive Types:

      int a = 5;
      int b = 10;
      if (a != b) {
          System.out.println("a and b are not equal");
      }
      

      In this example, a and b are two integer variables with different values. The != operator checks if they are not equal.

    2. Comparing Objects:

      String str1 = "Hello";
      String str2 = "World";
      if (str1 != str2) {
          System.out.println("str1 and str2 do not refer to the same object");
      }
      

      Here, str1 and str2 are two String objects. The != operator checks if they do not refer to the same object in memory.

    3. With Conditional Expressions:

      boolean isRaining = false;
      if (isRaining != true) {
          System.out.println("It is not raining");
      }
      

      In this case, isRaining is a boolean variable, and the != operator is used to check if its value is not true.

    Remember that when comparing objects for equality in Java, it is often more appropriate to use the .equals() method, especially for String comparisons or custom objects, as != compares object references, not the content of the objects. However, for primitive data types and simple checks of whether two references are to the same object, != is the correct choice.

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