ICSE Computer JAVA question

Guess the output of this java program.

class CoolProg
{
static void main()
{
System.out.println(Math.random());
System.out.println("over"+2+3);
System.out.println(2+3+"over"+0);
System.out.println(2+3+"over");
System.out.println(2+3+'A'+-1);
System.out.println('a'+"bhas");
System.out.println('A'+ 2);
System.out.println('A'+ 2);
int b=1;
int c=-b;
System.out.println(-b);
System.out.println(c);
String s="abhas";
System.out.println(s.substring(3,5));
System.out.println(s.substring(0,3));
System.out.println(s.substring(4));
System.out.println(s.substring(2));
}
}

/* * answer

0.6834987231679766 (random no less than 1)
over23
5over0
5over
69
abhas
67
67
-1
-1
as
abh
s
has

*/