What is the string contained in s after following lines of code? StringBuffer s new StringBuffer("Hello"); s.deleteCharAt(0);

Related MCQs

• Given the following declarations String s1=new String("Hello") ; String s2=new String("there"); String s3=new String(); Which of the following are legal operations?
• Consider the following code snippet String river = new String(“Columbia”); System.out.println(river.length()); What is printed?
• Given the code String s = new String("abc"); Which of the following call is not valid?
• If you run the code below, what gets printed out?String s=new String ("Bicycle"); int iBegin=1; char iEnd=3; System.out.println (s.substring (iBegin, iEnd));
• Which of these method of class StringBuffer is used to find the length of current character sequence?
• The capacity if StringBuffer is defined as _________.
• Given the following code:~~~class Base { int x = 10; }~~~class Derived extends Base~~~{ int x = 20; }~~~Base b = new Base();~~~Derived d = new Derived ( );~~~Base bd = new Derived(); The statement~~~System.out.println(b.x + " " + d.x + " " + bd.x);~~~will produce the output
• After the following code fragment, what is the value in a?~~~String s; int a;~~~s = "Foolish boy."; a = s.indexOf("fool");
• Suppose A is an abstract class ,B is a concrete subclass of A, and both A and B have an default constructor. Which of the following is correct? a) A a = new A(); b)A a = new B(); c) B b = new A(); d) B b = new B();
• Which of these method of class String is used to extract a single character from a String object?