What is the bit mask for the following permissions on a file? owner: read, write,execute group: read and execute others: read and execute Binary: Octal:
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- PrintWriter and Scanner - text file I/O DataInputStream and DataOutputStream - binary file I/O RandomAccessFile - binary file i/o where every record is the same number of bytes so that you can seek to a specific record ObjectInputStream and ObjectOutputStream - read and write objects.If a file is set with the immutable flag, what security controls does this provide for the file?Prog 1. File Encryption: File encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter reading the contents of one file, modifying each character in the input file into a code, and then writing the coded characters out to a second file. The second file will be a version of the first file but written in a secret code. In Notepad or something similar, you will create a file with text in it. It should be several lines long. Your program should read the file character by character and make some change to the character before writing that character to a second new encrypted file. See program 13-8 to see how to read and write one character at a time. You may come up with an encryption technique of your own or use something simple like adding 10 to the ASCII code of each character in the file before it is written to the second file.
- POWERSHELL TASK Try to multiply two numbers stored into a file and the file name should be a command-line argument.The ObjectOutputStream class is used to serialize an Object. The following Serialize Demo program instantiates an Employee object and serializes it to a file. Complete the code. Write codes where asked with appropriate try catch block class SDemo { } main method { } //Create an Employee object //set a name for this employee //set employee number to 1010 //create an object of file output stream //create an object of the object output stream //write Employee info to this object of output stream //close the out stream //close the file //print statementIf a file contains an index directory that allows for random access, what does it mean?
- Given a valid file object, f, which of the following calls will return the entire contents of the file in a scalar x? x = f.readline() x = f.readlines() x = f.read() X = read(f)Second script (awk) Write a short awk script (in a file named num.awk) that accepts as argument a single file and prints to the terminal the file with the lines numberedFile encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded contents out to a second file. The second file will bea version of the first file, but written in a secret code.Although there are complex encryption techniques, you should come up with a simple one of your own. For example, you could read the first file one character at a time, and add 10 to the character code of each character before it is written to the second file. Write a program that decrypts the file produced by the program in above.The decryption program should read the contents of the coded file, restore the data to its original state, and write it to another file.
- at the True false beginning of a file the flag eof() is ifstream True false declares files that we can write on close() is used True false to close the graphics window data True false structures can have members of different typesAn output file object is used similar to: cin getline strike coutThe function feof() can be used to detect: when a reading operation reaches the end of a file. when the program reaches the end of a function. when a file is closed before a reading operation. when an opened file doesn't have reading permission.