java important theory problems

Question 16

What is isUpperCase();

Ans

It work on single character. This function return true or false. If user enter character in upper case returns true otherwise it returns false

Question 17

Give example of isUpperCase();

Ans

Example       Character.isUpperCase(A)    returns true  Character.isUpperCase(s)

Returns false.

Question 18

What is isLowerCase();

Ans

It work on single character. This function return true or false. If user enter character in lower case returns true otherwise it returns false

Question 19

Give examples of  isLowercase()

Ans

Example       Character.isLowerCase(s)    returns true  Character.isLowerCase(A)

Returns false.

Question 20

What is toUpperCase();

Ans

It convert lowercase into upper case.

Question 21

Give example of toUpperCase();

Ans

Example      Charater.toUpperCase(a)   it returns  A