vault backup: 2024-02-20 13:05:19

2024-02-20 13:05:19 +00:00
parent 7f6d033cc4
commit 0134f066d6
45 changed files with 1429 additions and 76 deletions
--- a/2/Library.java
+++ b/2/Library.java
@@ -0,0 +1,110 @@
+
+/**
+ * Write a description of class Library here.
+ * 
+ * @author (your name) 
+ * @version (a version number or a date)
+ */
+
+// Import all required libraries. Not using .* as it is not good practice due to potential conflicts.
+import java.util.ArrayList;
+import java.util.Scanner;
+import java.io.File;
+import java.io.IOException;
+import java.awt.FileDialog;
+import java.awt.Frame;
+
+public class Library
+{
+    private ArrayList<LibraryItem> itemList; // Initialise an ArrayList of name itemList to store LibraryItems
+    
+    /*
+     * Constructor for objects of class Library
+     */
+    public Library()
+    {
+        itemList = new ArrayList<LibraryItem>();
+    }
+    
+    /*
+     * Appends a LibraryItem to the itemList.
+     */
+    public void storeItem( LibraryItem item )
+    {
+        itemList.add( item );
+    }
+    
+    /*
+     * Prints to the terminal all items in the itemList
+     */
+    public void printAllItems()
+    {
+        for( LibraryItem item : itemList )
+        {
+            item.printDetails();
+        }
+    }
+    
+    public void readItemData() //throws IOException
+    {
+        Frame frame = null; // Initialise a null frame
+        FileDialog fileBox = new FileDialog( frame, "Open", FileDialog.LOAD ); // Initialise filebox with the null frame pointer
+        fileBox.setVisible( true ); // Open a file selection dialog to the user.
+        
+        try {
+            Scanner fileScanner = new Scanner( new File( fileBox.getDirectory() + fileBox.getFile() ) );
+            String typeFlag = "";
+            
+            while( fileScanner.hasNextLine() ){
+                
+                String lineItem = fileScanner.nextLine();
+                //System.out.println( lineItem );
+                
+                // Ensure no comments or empty lines are included
+                if ( lineItem.contains( "//" ) || lineItem.trim().isEmpty() ){}
+                
+                // Check current line is a candidate flag
+                else if ( lineItem.startsWith("[" ) ) {
+                    if ( lineItem.toLowerCase().contains("book") ) {
+                        typeFlag = "book";
+                        //System.out.println( "CHANGED FLAG TO READ BOOKS" );
+                    }
+                    else if ( lineItem.toLowerCase().contains("periodical") ) {
+                        typeFlag = "periodical";
+                        //System.out.println( "CHANGED FLAG TO READ PERIODICALS" );
+                    }  
+                    else {
+                        System.out.println( "Flag detected, but no accepted format...\n Cannot store item in Library. Changing Flag to generic and skipping the following: ");
+                        typeFlag = "generic";
+                    }
+                }
+                
+                // Could be a switch case to be more efficient
+                // Check current flag for data processing.
+                else {
+                    if ( typeFlag.equals( "book" ) ) {
+                        // Process Book Data
+                        Scanner detailScanner = new Scanner ( lineItem ).useDelimiter(","); // Create a new scanner to grab the values in a comma separated list
+                        LibraryItem book = new Book();
+                        book.readItemData( detailScanner );
+                        storeItem( book ); // Store the new LibraryItem in the itemList
+                    }
+                    else if ( typeFlag.equals( "periodical" ) ) {
+                        // Process Periodic Data
+                        Scanner detailScanner = new Scanner ( lineItem ).useDelimiter(",");
+                        LibraryItem periodical = new Periodical();
+                        periodical.readItemData( detailScanner );
+                        storeItem( periodical );
+                    }
+                    else if ( typeFlag.equals( "generic" ) ) {
+                        // Output unaccepted lines
+                        System.out.println( lineItem );
+                    }
+                }
+            }
+        }
+        catch( IOException e ) { // Catch any IO Exceptions that may occur from improper file selection.
+            System.err.println( "Caught IOException: " + e.getMessage() + "\nAn I/O Exception has occurred, please check file is readable and correct format." );
+        }
+    }
+}