String Manipulation

Appeared in 11 of the 11 available papers.

Examined in

11 of 11 papers

Appears almost every year — treat as core

Typically worth

19.4 marks

Average per paper it appears in · 213 marks in total

Usual form

MCQ

33% of this chapter's 43 questions

Needs a diagram

No diagram questions in this chapter

Question-type distribution

MCQ14
Program13
Output12
Short answer2
Difference2

Most frequent topics

substring() with two arguments 3Escape sequences 3Return types of String methods 2substring() and endsWith() 2compareTo() method 2substring() and concat() 2charAt() on an array of Strings 1Immutability of Strings 1

Print:Questions only Questions + answers Answers only

Print chapter question bank

Showing 25 of 43 matching questions (213 marks).

25 questions

Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)

1(xiv)2026

MCQModerate1 mark

To extract the word NOW from the word "ACKNOWLEDGEMENT", the Java statement "ACKNOWLEDGEMENT".substring(3, ____) is used. Choose the correct number to fill in the blank.

(a)6
(b)7
(c)5
(d)8

1(xv)2026

MCQHard1 mark

String a[] = {"Atasi", "Aditi", "Anant", "Amit", "Ahana"}; System.out.println(a[1].charAt(1) + "*" + a[2].charAt(2)); The output of the above statement is:

(a)da
(b)d * a
(c)ti
(d)t * i

1(xvi)2026

MCQModerate1 mark

Which of the following String methods returns a negative value?

(a)length()
(b)equals()
(c)compareTo()
(d)charAt()

1(xix)2026

MCQModerate1 mark

Assertion (A): The substring() method modifies the original String. Reason (R): The substring() method can extract part of a String starting from a specific index.

(a)(A) is true and (R) is false.
(b)(A) is false and (R) is true.
(c)Both (A) and (R) are true and (R) is the correct explanation of (A).
(d)Both (A) and (R) are true, but (R) is not the correct explanation of (A).

2(v)2026

OutputModerate2 marks

Give the output of the following program segment: String S = "GRACIOUS".substring(4); System.out.println(S); System.out.println("GLAMOROUS".endsWith(S));

2(x)2026

Short answerModerate2 marks

Name the following: (a) The return data type of the method equals(). (b) The String method which has no parameter and returns a String.

82026

ProgramHard15 marks

Write a program to accept a word and print the Symbolic of the accepted word. Symbolic word is formed by extracting the characters from the first consonant, then add characters before the first consonant of the accepted word and end with "TR". Example: AIRWAYS - Symbolic word is RWAYSAITR BEAUTY - Symbolic word is BEAUTYTR

Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)

1(xviii)2025

MCQModerate1 mark

System.out.println("I said, \"It's wise to obey elders.\""); The output of the above statement is:

(a)I said, 'It is wise to obey elders.'
(b)I said, "It's wise to obey elders."
(c)I said, It's wise to elders.
(d)"'It's wise to obey elders.'"

1(xix)2025

MCQModerate1 mark

What is the output of the statement given below? "ANGER".compareTo("ANGEL")

(a)3
(b)-6
(c)6
(d)0

2(ii)2025

OutputModerate2 marks

Write the output of the following String method: String x = "talent"; String y = "matrix"; System.out.print(x.substring(3).concat(y.substring(3)));

2(vi)2025

Short answerModerate2 marks

(a) Name one String method which results in positive integer only. (b) Name one String method which results in a character.

2(x)2025

OutputModerate2 marks

Give the output of the following program segment and specify how many times the loop is executed. String s = "JAYA"; for(i = 0; i < s.length(); i += 2) System.out.println(s.substring(i));

52025

ProgramHard15 marks

Define a class to accept a String and print if it is a Super String or not. A String is Super if the number of uppercase letters is equal to the number of lowercase letters. [Use Character & String methods only] Example: "COmmITmeNt" Number of Uppercase letters = 5 Number of Lowercase letters = 5 String is a Super String

Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)

1(iii)2024

MCQEasy1 mark

The output of the statement "CONCENTRATION".indexOf('T') is __________.

(a)9
(b)7
(c)6
(d)-1

1(v)2024

MCQModerate1 mark

The output of the statement "talent".compareTo("genius") is __________.

(a)11
(b)-11
(c)0
(d)13

2(viii)2024

ProgramHard2 marks

The following code to compare two strings is compiled, the following syntax error was displayed — incompatible types: int cannot be converted to boolean. Identify the statement which has the error and write the correct statement. Give the output of the program segment. void calculate() { String a = "KING", b = "KINGDOM"; boolean x = a.compareTo(b); System.out.println(x); }

82024

ProgramHard15 marks

Define a class to accept the gmail id and check for its validity. A gmail id is valid only if it has: @ . (dot) gmail com Example: icse2024@gmail.com is a valid gmail id.

Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)

1(xi)2023

MCQEasy1 mark

The String class method to join two strings is:

(a)concat(String)
(b)joint(String)
(c)concat(char)
(d)Concat()

1(xii)2023

MCQModerate1 mark

The output of the function "COMPOSITION".substring(3, 6):

(a)POSI
(b)POS
(c)MPO
(d)MPOS

2(vii)2023

OutputHard2 marks

Give the output of the following String class methods: (a) "COMMENCEMENT".lastIndexOf('M') (b) "devote".compareTo("DEVOTE")

62023

ProgramHard15 marks

Define a class to accept a String and print the number of digits, alphabets and special characters in the string. Example: S = "KAPILDEV@83" Output: Number of digits - 2 Number of Alphabets - 8 Number of Special characters - 1

Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)

1(iii)2022

MCQModerate1 mark

Give the output of the following String methods: "SUCCESS".indexOf('S') + "SUCCESS".lastIndexOf('S')

(a)0
(b)5
(c)6
(d)-5

1(vi)2022

MCQEasy1 mark

Give the output of the following code: System.out.println("Good".concat("Day"));

(a)GoodDay
(b)Good Day
(c)Goodday
(d)goodDay

1(x)2022

MCQModerate1 mark

What will be the output of the following code? System.out.println("Lucknow".substring(0, 4));

(a)Lucknow
(b)Luckn
(c)Luck
(d)luck

52022

ProgramHard10 marks

Define a class to accept a string, and print the characters with the uppercase and lowercase reversed, but all the other characters should remain the same as before. EXAMPLE: INPUT : WelCoMe_2022 OUTPUT : wELcOmE_2022