Java String Quiz

What is the type of objects that can store a sequence of characters in Java?

• Character

• String

• Array

• Text

Which operator is used for both addition and concatenation in Java?

• /

• -

• *

• +

How do you create a string using the new keyword in Java?

• String str = new String[];

• String str = String.new();

• String str = new String("");

• String str = new String();

What escape character is used to insert a double quote in a string?

• \"

• \'

• \\

• \n

What will be the result of the following code:

String x = "50";

int y = 20;

String z = x + y;

• 50.20

• 50

• 5020

• 70

Which escape sequence represents a new line in Java?

• \b

• \r

• \t

• \n

What will be the output of the following code:

String str = "Hello";

System.out.println(str.length());

• 5

• 4

• Null

• 6

What will be the output of the following code:

String str = "Java";

System.out.println(str.charAt(2));

• a

• Null

• J

• v

Which method is used to find the index of a character in a string?

• findIndex()

• getIndex()

• indexOf()

• charAt()

What will be the output of the following code:

String str = "World";

System.out.println(str.substring(1, 4));

• Wor

• orld

• orl

• rld