What will be the output of the following Java code?

class output 
{
    public static void main(String args[])
    {
        char ch;
        ch = "hello".charAt(1);
        System.out.println(ch);
    }
}

In Java, which class is used to represent a sequence of characters as a string?

A. String

B. StringBuilder

C. StringSequence

D. StringArray

What is the correct way to create a new empty String object in Java?

A. String emptyString = "";

B. String emptyString = new String();

C. String emptyString = " ";

D. String emptyString = null;

E. Both A and B

In Java, which operator is used to concatenate two strings?

A. +

B. &

C. ,

D. |

Which of the following methods is used to compare two strings for equality in Java?

A. equals()

B. compareTo()

C. equalsIgnoreCase()

D. compare()