Java

Describe method.

• A component of a program in a big program.

• A program to perform a specific task.

• A component of a program written to perform a specific task.

• A variable that use to read an input.

This is a general structure a method.

• <Returnvalue type> <Method Name> (argument / s)

• <Modifier> < type> <Method Name> (parameter / s)

• public static void main (String[ ] args)

• <Method Name> (parameter)

In which line is representing the meaning of Standard library method.

• Line 2

• Line 8

• Line 13

• Line 10

The different between static and non static method is ....

• for non static method : user need to create object in a class to call a method.

• A method is to perform only specific task.

• There is no significant differences between static and non - static method.

• Both are bounded with a class.

This program is consist with syntax error. Identify the reason and fix the error with the most suitable answer.

• Mismatched with data type of radius and height.

  FIx with :- char radius, height;

• Mismatched with data type of r and h in method.

  FIx with :- int r, h;

• Mismatched with variable name of radius and height.

  FIx with :- double r, h;

• Mismatched with data type of radius and height.

  FIx with :- double radius, height;

Is String a primitive data type?

• Yes

• No

• Both

Which method to use to find length of a string?

• length()

• size()

• long()

• count()

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"