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4.4 Using a text editor or word processor, create a text file containing a series of five surnames and examination marks, each item on a separate line. For example: Smith 47 Jones 63 By extending the code given below, create a random access file called results.dat, accepting input from the standard input stream (via a Scanner object) and redirecting input from the above text file. Each record should comprise a student surname and examination mark. When all records have been

4.4 Using a text editor or word processor, create a text file containing a series of five surnames and examination marks, each item on a separate line. For example: Smith 47 Jones 63 By extending the code given below, create a random access file called results.dat, accepting input from the standard input stream (via a Scanner object) and redirecting input from the above text file. Each record should comprise a student surname and examination mark. When all records have been

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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4.4 Using a text editor or word processor, create a text file containing a series of five surnames and examination marks, each item on a separate line. For example: Smith 47 Jones 63 ... By extending the code given below, create a random access file called results.dat, accepting input from the standard input stream (via a Scanner object) and redirecting input from the above text file, Each record should comprise a student surname and examination mark, When all records have been File Handling written, reposition the file pointer to the start of the file and then read each record in turn, displaying its contents on the screen. import java.io.*; import java.util.*; public class FileResults private static final long REC_SIZE - 34; private static final int SURNAME_SIZE = 15; private static String surname; private static int mark; public static void main (String() args) throws IOException *** *** SUPPLY CODE FOR main! public static void writeString( RandomAccessFile file, String text, int fixedSize) throws IOException int size = text.length (); %3D if (sizec=fixedSize) file.writeChars (text); for (int i=size; i<fixedSize; i++) file.writeChar (' '); else file.writeChars (text.substring ( 0, fixedSize)); public static String readString( RandomAccessFile file, int fixedSize) throws IOException String value - ""; for (int i-0; i<fixedSize; i++) value+=file.readChar () ; return value;
Transcribed Image Text:4.4 Using a text editor or word processor, create a text file containing a series of five surnames and examination marks, each item on a separate line. For example: Smith 47 Jones 63 ... By extending the code given below, create a random access file called results.dat, accepting input from the standard input stream (via a Scanner object) and redirecting input from the above text file, Each record should comprise a student surname and examination mark, When all records have been File Handling written, reposition the file pointer to the start of the file and then read each record in turn, displaying its contents on the screen. import java.io.*; import java.util.*; public class FileResults private static final long REC_SIZE - 34; private static final int SURNAME_SIZE = 15; private static String surname; private static int mark; public static void main (String() args) throws IOException *** *** SUPPLY CODE FOR main! public static void writeString( RandomAccessFile file, String text, int fixedSize) throws IOException int size = text.length (); %3D if (sizec=fixedSize) file.writeChars (text); for (int i=size; i<fixedSize; i++) file.writeChar (' '); else file.writeChars (text.substring ( 0, fixedSize)); public static String readString( RandomAccessFile file, int fixedSize) throws IOException String value - ""; for (int i-0; i<fixedSize; i++) value+=file.readChar () ; return value;
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