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- 1. Multiple Choice
Is String a primitive data type?
Yes
No
Both
- 2. Multiple Choice
Which method to use to find length of a string?
length()
size()
long()
count()
- 3. Multiple Choice
Which data type gets returned from length() method in String class?
double
String
int
number
- 4. Multiple Choice
String txt = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
What is the correct way to find the length of "txt" string?
int len = length(txt);
float len = txt.length();
int len = txt.length();
double len = length(txt);
- 5. Multiple Choice
Which is correct method to convert String into uppercase
changeUpperCase()
convertUpperCase()
toUpper()
toUpperCase()
- 6. Multiple Choice
String txt = "Hello World";
System.out.println(txt.toUpperCase());
Choose the correct output.
"HELLO WORLD"
HELLO WORLD
Hello world
Hello World
- 7. Multiple Choice
Choose correct purpose of indexOf() in String class.
returns the index (the position) of the last occurrence of a specified text in a string
returns the character of the first occurrence of a specified character in a string
returns the index (the position) of the first occurrence of a specified text in a string (excluding whitespace)
returns the index (the position) of the first occurrence of a specified text in a string (including whitespace)
- 8. Multiple Choice
String x = "10";
String y = "20";
String z = x + y;
System.out.println(z);
Guess the output.
1020
10 20
30
"10 20"
- 9. Multiple Choice
What will be the output of below code?
String statement = "Outfit of the day";
System.out.println(statement.Substring(3,6));
it of
tfit
fit
FIT
- 10. Multiple Choice
Choose most appropriate purpose of trim() method in String?
to remove white spaces
to get a substring of the string
to cut String at desired index
to remove extra white spaces from start and end of String
- 11. Multiple Choice
What is the return type of equalsIgnorecase() method?
int
String
char
boolean
- 12. Multiple Choice
What is the most appropriate way to check if two Strings are identical?
string1 == string2
string1.equals(string2)
string1.same(string2)
string1.equalsIgnorecase(string2)
- 13. Multiple Choice
(Multiple answer question)
Pick all NON-primitive datatypes from below :
String
int
primitive
Array
- 14. Multiple Choice
What is the correct relation between length and last-index of array?
last-index is always 1 more than the length
last-index is 1 less than the length (but not always)
last-index is always 1 less than the length
last-index is always equal to the length
- 15. Multiple ChoiceString word = "A few good men";
What is word.length()?141513 - 16. Multiple ChoiceString word = "A few good men";
What is word.charAt(7) ?og7good men - 17. Multiple ChoiceString word = "A few good men";
What is word.startsWith("A few") ?truefalse - 18. Multiple ChoiceString word = "A few good men";
What is word.endsWith("man") ?truefalse - 19. Multiple Choice
String word = "A few good men";
What is word.indexOf(“f”)?
2
0
1
3
- 20. Multiple ChoiceString word = "A few good men";
What is word.substring(3, 7) ?ew gew gofewfew[space] - Answer choicesTagsAnswer choicesTags