java how to program

Unrecognized option: --version Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.

in java write a code that suppose the following input is supplied to the program: 9 Then, the output should be: 12096 (99+999+9999+999)

In the tennis tournament every person has to play with every other person in the first round, write a Java program to generate the schedule for it.

1. Write a program in Java to accept a string in lowercase and change the first letter of every word to uppercase. Display the new string.

program in java. Get a string from user and also validate it’s length should be at least 1. Pass this string to a method that returns a new string with the first char added at the front and end, so "cat" yields "ccatc".