Write a program by using scanner class to input a sentence. Display the longest word along with number of characters.

Sample Input: We are learning scanner class in Java
Sample Output: The longest word: learning Number of characters: 8

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Write a program to accept a sentence in a mixed case. Find the frequency of vowels in each word and print the words along with their frequencies in separate lines.

Sample Input: We are learning scanner class
Sample Output: Word                 Frequency
                             We                            1
                             Are                           2
                             Learning                   3
                             Scanner                    2
                             Class                         1

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In a competitive examination, a set of 'N' number of questions results in True or 'False'. Write a program by using the scanner class to accept the answers. Print the frequency of 'True' and 'False'.

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    Write a menu-driven program to accept a number by using the scanner class. Perform the following tasks.
a)      Check and print whether the number is a 'Buzz number or not. A number is said to be a 'Buzz' number if it is divisible by 7 and it contains the last digits 7.
b)      Display all the factors of the number including 1 and excluding the number itself.

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Write a program (using scanner class) to generate a pattern of a token in the form of a triangle or the form of an inverted triangle depending upon the user’s choice.

Sample Input: Enter your choice 1                   Enter your choice 2
Sample Output: *                                                      * * * * *
                            * *                                                    * * * *
                            * * *                                                 * * *
                            * * * *                                              * *
                            * * * * *                                           *

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Write a program to accept a set of 50 integers. Find and print the greatest and the smallest numbers by using the scanner class method.

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Write a program (Using scanner class) to input a line and display only numeric tokens.

Sample Input: 26 January 1950 is celebrated as Republic Day
Sample Output: 26  1950

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Using the scanner class, write a program to input 10 important cities with their STD code in two different single-dimensional arrays. The program displays only those that begin with a vowel with their corresponding STD code.

Sample Input: Enter city and STD code one by one
New Delhi
011
Asansol
0341
Indore
0731
…………..
…………..
Sample Output: Asansol          0341
Indore             0731
……….….          …………..
……….….          …………..

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Write a program (Using scanner class) to enter a token/word in a mixed case and display the new token after deleting all the vowels.

Sample Input: Computer
Sample Output: Cmptr

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Using the scanner class, write a program to input a line through the console. The program counts and displays the total number of uppercase and lowercase characters present in the String.

Sample Input:    Understanding Computer Application with BlueJ
   Sample Output: No. of lowercase characters = 37
                                No. of uppercase characters = 5

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Write a program (using scanner class) to input any given token word to calculate the total number of characters and vowels present in the token. The program also displays the reverse token.

Sample Input: SNOWY
Sample Output:
Number of vowels: 01
Number of character: 05
Reversed token: YWONS 

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Write a program (Using scanner class) to store 10 different words (in lower case) in a single-dimensional array. Display all such tokens that begin and end with a vowel.

Sample Input: Enter 10 words in lowercase
                         Umbrella
                         Table
                         Computer
                         Agenda
                         …………
                         …………
Sample Output: umbrella
                            Agenda
                            …………
                            …………

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Using the scanner class, write a program to display the sum of even numbers and odd numbers separately from a set of numbers entered by the user. The program terminates when the user enters any non-numeric character.

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G.C.D. defined as the Greatest Common Divisor between the two numbers is calculated by the continued divisor method. i.e. Divide the larger number by the smaller, the remainder then divides the previous divisor. The process is repeated till the remainder is zero. The last divisor gives the GCD. Write a program to input two numbers and display the Greatest Common Divisor by using the scanner class.

Sample Input: Enter two numbers
                              45       85
Sample Output: GCD of two numbers is 5

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Using the scanner class, write a program to find and display the sum of any ten numbers entered by the user from the console.

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Write a program (using scanner class) to generate a pattern of a token/word in the form of a triangle or in the form of an inverted triangle depending upon user’s choice.

Sample Input: Enter a word as a Token     CLASS
                          Enter your choice 1
                          Enter your choice 2
Sample Output: C  L  A  S  S
C                         C  L  A  S  S
C  L                     C  L  A  S
C  L  A                C  L  A
C  L  A  S            C  L
C  L  A  S  S        C

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Consider a String as:

RED BOTTLE IS IN RED BAG ON RED CARPET

Using the scanner class, write a program to enter the string through a console and replace the token RED with GREEN without using the built-in function. The new string is displayed as:

GREEN BOTTLE IS IN GREEN BAG ON GREEN CARPET

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Write a program to enter two tokens in mixed case. The user compares the strings and wants to arrange them alphabetically. [Hint: Use scanner class]. If the ASCII value of the first character of the token is less than the second, then the first token is smaller and vice-versa. Two strings are said to be equal if their ASCII value is the same.

Sample Input: Computer
                          Science
Sample Output: Computer, Science

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A computer typist has the habit of deleting the middle token ‘Kumar’ while entering the names containing three words/tokens. Write a program (using scanner class) to enter the names with three words and display the new name after deleting the middle token ‘Kumar’.

Sample Input: Rajesh Kumar Agarwal
Sample Output: Rajesh Agarwal

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Consider the String in lowercase as:

the black cat ate the rat in the small house

Using Scanner Class, write a program to enter the line ending with a space and terminating with a full stop (.). Display the frequency of the token ‘the’ in the given String.

Sample Input: the black cat ate the rat in the small house.
Sample Output: The frequency of the token ‘the’ = 3

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