Which of the following is a valid Java output file declaration?

How can I have my program read a file from the console?  the input in the command line for example is: java Test03 -i <filename> java Test03 -s <filename> The program will read the file and index it as in the previous option (-i), but will then prompt the user to enter a word, instructing the user that entering an empty line (no printable characters) will cause the program to exit. The program will then find the word in the tree, outputting the words (but not the indices) of each node it searches to demonstrate that it is performing a proper search and demonstrating that your binary search tree is properly structured. If it finds the target word, it will then output (on a separate line) the word's entry as specified in the previous option (-i). (Hint: a method to output a node's data into a String and then print that string using println().) The program will then prompt the user to enter a word (as before), continuing in the loop until the user exits the program.

A software receives data from a file named inputFile.dat and outputs the results to a file called outFile.dat after doing certain computations. Respond to the following questions:   a. What is the content of the file inputFile.dat after the application runs?   b. What are the contents of the file outFile. dat after the programme executes if this file was empty before the programme executed?   c. What are the contents of the file outFile. dat after the programme executes if this file held 100 numbers before the programme executed?   d. What would happen if the file outFile.dat did not exist when the programme was run?

Write a program that creates the following three files; dataplus.txt dataminus.txt zeros.txt The program should read each line of the data.txt file and perform the following; If the line contains a positive number, that number should be written to the dataplus.txt file If the line contains a negative number, that number should be written to the dataminus.txt file If the line contains the value 0, do not write the value to a file. Instead, keep a count of the number of times 0 is read from the data.txt file After all the lines have been read from the data.txt file, the program should write the count of zeros to the zeros.txt file. The code is below does not work: