OOP - Quiz

Which type of data is used to enter the value ("Welcome")?

• Text
• Characters
• String
• Boolean

Which type of data is used to enter the value (1234.5)?

• Integer
• Double 
• Char
• Void

We are use Scanner Library in java for...

• Give permissions to the user
• Correcting software errors
• Allows user to read data
• Allows the user to enter data

Which type of data is used to enter the value (True)?

• Float
• Boolean
• Check box
• ٍString

We are use For loop ..........

• To repeat a specified number of operations.
• To repeat a unspecified number of operations.
• All answers are correct

Is String a primitive data type?

• Yes

• No

• Both

Which data type gets returned from length() method in String class?

• double

• String

• int

• number

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);

String txt = "Hello World";

System.out.println(txt.toUpperCase());

Choose the correct output.

• "HELLO WORLD"

• HELLO WORLD

• Hello world

• Hello World

String x = "10";

String y = "20";

String z = x + y;

System.out.println(z);

Guess the output.

• 1020

• 10 20

• 30

• "10 20"