Give the output of the following code:

System.out.println("Good".concat("Day"));

1. GoodDay
2. Good Day
3. Goodday
4. goodDay

A single dimensional array contains N elements. What will be the last subscript?

1. N
2. N - 1
3. N - 2
4. N + 1

Give the output of the following code :

String A = "56.0", B = "94.0";
double C = Double.parseDouble(A); 
double D = Double.parseDouble(B); 
System.out.println((C+D));

1. 100
2. 150.0
3. 100.0
4. 150

What will be the output of the following code?

System.out.println("Lucknow".substring(0,4));

1. Lucknow
2. Luckn
3. Luck
4. luck