Page 446 - CA_Blue( J )_Class10
P. 446
8. Write statements to show how finding the length of a character array char ch[] differs from finding the length of a String
object str. [2013]
Ans. For character array : int len = ch.length;
For String object str : int len = str.length();
9. State the values stored in the variables str1 and str2:
String s1 = "good";
String s2 = "world matters";
String str1 = s2.substring(5).replace('t', 'n');
String str2 = s1.concat(str1); [2013]
Ans. str1 : manners str2 : good manners
10. State the output of the following program segment:
String s = "Examination";
int n = s.length();
System.out.println(s.startsWith(s.substring(5, n)));
System.out.println(s.charAt(2) == s.charAt(6)); [2012]
Ans. false
true
11. State the data type and values of a and b after the following segment is executed:
String s1 = "Computer", s2 = "Applications"
a = (s1.compareTo(s2));
b = (s1.equals(s2)); [2012]
Ans.
Variable a b
Data type int boolean
Value 2 false
12. What will the following code output:
String s = "malayalam";
System.out.println(s.indexOf('m'));
System.out.println(s.lastIndexOf('m')); [2012]
Ans. 0
8
SECTION B
13. Define a class to declare an array to accept and store ten words. Display only those words which begin with the letter 'A' or 'a'
and also with the letter 'A' or 'a'. [2022]
EXAMPLE:
Input: Hari, Anita, Akash, Amrita, Alina, Devi, Rishab, John, Farha, AMITHA
Output: Anita
Amrita
Alina
AMITHA
Ans. import java.util.Scanner;
public class Letters
{
public static void main(String[] args)
{
String names[] = new String[10];
Scanner sc = new Scanner(System.in);
int l = names.length;
System.out.println("Enter 10 names: ");
for (int i = 0; i < l; i++)
444444 Touchpad Computer Applications-X

