Java Strings Aptitude Questions and Answers.
Page 2.

public class temp
{
	public static void main(String args[])
	{
		String text="ABCD";
		byte[] xByte=text.getBytes();
		
		for(byte loop: xByte)
		{
			System.out.print(loop+" ");
		}		
	}
}

1. A B C D
2. 41 42 43 44
3. 65 66 67 68
4. Error

String text="Hello World, How are you?";
System.out.print(text.lastIndexOf('o'));
System.out.print(" "+text.lastIndexOf('o',5));

1. 22 4
2. 22 22
3. 22 16
4. None of these

String text="Hello World!";
int index= text.indexOf("llo");
System.out.println(index);

1. 3
2. 2
3. -1
4. Error

String text="Hello World!";
int index= text.indexOf("hello");
System.out.println(index);

1. 1
2. 0
3. -1
4. Error

String Str = new String("   Include   Help  ");
System.out.println(Str.trim() );

1.    Include   Help  
2. Include   Help
3.    Include   Help
4. None of these