Question

What will be the output of the following statement ? System.out.println(‘a’ + 1);

Answer 1

Answer:

Error

Explanation:

a variable is not available so you can't add it with 1.

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Answer 2

The output of the statement:

System.out.println(‘a’ + 1);

is

a1

• In Java, System.out.println() is a function used to print the argument that is passed to it, to the console.
• General syntax: System.out.println(parameter)
• Any data type which is passed as parameter to this function is first converted to String and then printed to the console.

• In this case, 'a' is converted to String and 1 is also converted to String.

       Therefore, it can be written as

        "a" + "1"

• In case of Strings, '+' operator is used as a String concatenation operator and it concatenates 2 strings.

       Here, "a" + "1" is concatenated to "a1".

• Therefore,

        System.out.println(‘a’ + 1);

        is same as

        System.out.println("a1");

• Hence a1 is printed to the console.

                                                                                                                #SPJ3