AddressBookIO.java - import java.io public class...

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import java.io.*; public class AddressBookIO { private static File addressBookFile = new File("address_book.txt"); private static final String FIELD_SEP = "\t"; private static final int COL_WIDTH = 20; // use this method to return a string that displays // all entries in the address_book.txt file public static String getEntriesString() { BufferedReader in = null; try { checkFile(); in = new BufferedReader( new FileReader(addressBookFile)); // define the string and set a header String entriesString = ""; entriesString = padWithSpaces("Name", COL_WIDTH) + padWithSpaces("Email", COL_WIDTH) + padWithSpaces("Phone", COL_WIDTH) + "\n"; entriesString += padWithSpaces("------------------", COL_WIDTH) + padWithSpaces("------------------", COL_WIDTH) + padWithSpaces("------------------", COL_WIDTH) + "\n"; // append each line in the file to the entriesString String line = in.readLine(); while(line != null) { String[] columns = line.split(FIELD_SEP); String name = columns[0]; String emailAddress = columns[1]; String phoneNumber = columns[2]; entriesString += padWithSpaces(name, COL_WIDTH) + padWithSpaces(emailAddress, COL_WIDTH) + padWithSpaces(phoneNumber, COL_WIDTH) + "\n"; line = in.readLine(); }
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