Why do I get this output?

Code:

---


public class testing
{
public static void main(String[] args)
        {
                final int a = 2, b = 3;
       
                System.out.println(a + "2");
               
                [COLOR="Red"]System.out.println(a + '2');[/COLOR]
               
                System.out.println("2" + a + b);
               
                System.out.println("2" + (a + b));
               
       
        System.exit(0);
        }
}

---

output is
22
52
223
25

How does the red highlighted code work? Thanks!

Quote:

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System.out.println(a + '2');

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chars can be converted by the compiler to their ASCII value. If you lookup the ASCII codes table you will see that the int value of '2' is 50.

Quote:

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Originally Posted by Norm

chars can be converted by the compiler to their ASCII value.

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There's no conversion involved. The Java primitive char is an integral type.
Types, Values, and Variables

db

Quote:

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Originally Posted by Darryl.Burke

There's no conversion involved. The Java primitive char is an integral type.
Types, Values, and Variables

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Well, there is some conversion happening but it happens during compile time; b.t.w. literal chars are converted to their Unicode code point values, not their ASCII code values (which is totally moot because ASCII is a subcode of Unicode).

kind regards,

Jos