What does this mean?

Question

The above code gives output 8,when initialized with 010.
anyone pls explain this?

public class Program
{
public static void main(String[] args) {

int a=010;

System.out.println(a);

}
}

Answer 1

02 will save 2 to the variable and 8 should go for next input so in my opinion the output should be just 2 .

I had tried this with arrays and it stores values in different array members .

Answer 2

starting with 0 change number to octal .

Answer 3

thanks @Sahaj

and also when I replaced int a=028;
it showed integer number too large.....

anyone pls explain?