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Numbers in Java (With 0 Prefix and with Strings)

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  • Difficulty Level : Easy
  • Last Updated : 30 May, 2018
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Consider the following Java program.




import java.io.*;
class GFG
{
    public static void main (String[] args)
    {
        int x = 012;
        System.out.print(x);
    }
}

Output:

10

The reason for above output is, when a 0 is prefixed the value is considered octal, since 12 in octal is 10 in decimal, the result is 10. Similarly, if i = 0112, result will be 74 (in decimal). This behavior is same as C/C++ (see this).

Also,




import java.io.*;
class GFG
{
    public static void main (String[] args)
    {
        String s = 3 + 2 + "hello" + 6 + 4;
        System.out.print(s);
    }
}

Output :

5hello64

Java takes the numbers before the strings are introduced as int and once the string literals are introduced, all the following numbers are considered as strings.

This article is contributed by Hiresh Trivedi. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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