Java Strings

What is the output of the following snippet?

• Hello Java

• Java Hello

• Hello

• String cannot be modified.

Which of these is not a method of String class?

• charAt()

• getChars()

• getString()

• toCharArray()

Strings in Java can be created using:

• String

• StringBuffer

• StringBuilder

• All of these

To which package does the string class belong to?

• java.io

• java.util

• java.lang

• javax.conn

Given this snippet , char chars[] = { 'a', 'b', 'c', 'd', 'e', 'f' };

String s = new String(chars, 2, 3);

What is the value of s?

• abc

• cde

• bc

• def

byte ascii[] = {65, 66, 67};

String s1 = new String(ascii);

What is the value of s1?

• 656657

• 67

• ABC

• abc

toString() belongs to ------- class?

• String

• Scanner

• Object

• Main

char ch;

ch = "Hello".charAt(1);

What is stored in ch?

• Null

• He

• H

• e

What is the output of the code?

• 
• 
• 
• None

What is the result of the expression: "Hello".substring(1,4)

• Hel

• H

• ell

• llo