Part 1: the double. parsedouble() method requires a string argument, but it fails if the string cannot be converted to a floating-point number. write an application named trytoparsedouble. java in which you try accepting a double input from a user and catch a numberformatexception if one is thrown. the try block will prompt the user for a double (using scanner method nextline() to read the string) and then call catch block forces the number to 0 and displays an appropriate error message. following the catch block, display the number. part ii: after you have the above code working, put the try/catch inside a loop. the loop terminates when the user has input a valid double. hint: use a flag that is set if the input is valid. do not use a break.

Write a program that uses a random number generator to generate a two digit positive integer and allows the user to perform one or more of the following operations: a. double the number. b. reverse the digits of the number. c. raise the number to the power of 2, 3, or 4. d. sum the digits of the number. e. if the number is a two-digit number, then raise the first digit to the power of the second digit. f. if the number is a three-digit number and the last digit is less than or equal to 4, then raise the first two digits to the power of the last digit. after performing an operation if the number is less than 10, add 10 to the number. also, after each operation determine if the number is prime. each successive operation should be performed on the number generated by the last operation. your program should not contain any global variables and each of these operations must be implemented by a separate function. also, your program should be menu driven. 7. (fraction calculator) write a program that

Which network media uses different regions of the electromagnetic spectrum to transmit signals through air? uses different regions of the electromagnetic spectrum to transmit signals through air.

What are three software programs for mobile computing?