Distinguish between isUpperCase() and toUpperCase()

Distinguish between isDigit() and isLetter()

Define a class (using the Scanner class) to generate a pattern of a 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: CLASS  
Enter your choice: 1        
Sample Output:                
C
CL
CLA
CLAS
CLASS

Enter your choice: 2
Sample Output:
CLASS
CLAS
CLA
CL
C

Define a class called mobike with the following description:

Instance variables/Data members:
int bno - to store the bike's number
int phno - to store the phone number of the customer
String name - to store the name of the customer
int days - to store the number of days the bike is taken on rent
int charge - to calculate and store the rental charge

Member Methods:
void input() - to input and store the details of the customer
void compute() - to compute the rental charge

The rent for a mobike is charged on the following basis:
First five days Rs 500 per day;
Next five days Rs 400 per day;
Rest of the days Rs 200 per day.

void display () - to display the details in the following format:

Bike No.    Phone No.   No. of days     Charge