vault backup: 2024-02-06 13:09:16

.obsidian/workspace.json

@@ -11,10 +11,11 @@
             "id": "505b4bbc8a7e15f6",
             "type": "leaf",
             "state": {
-              "type": "diff-view",
+              "type": "markdown",
               "state": {
-                "file": ".obsidian/workspace.json",
+                "file": "Semester 2/Database Systems/Week 4/Week 4 Database Systems.md",
-                "staged": false
+                "mode": "source",
+                "source": false
               }
             }
           }
@@ -85,6 +86,7 @@
             "state": {
               "type": "backlink",
               "state": {
+                "file": "Semester 2/Database Systems/Week 4/Week 4 Database Systems.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -101,6 +103,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
+                "file": "Semester 2/Database Systems/Week 4/Week 4 Database Systems.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -122,7 +125,9 @@
             "type": "leaf",
             "state": {
               "type": "outline",
-              "state": {}
+              "state": {
+                "file": "Semester 2/Database Systems/Week 4/Week 4 Database Systems.md"
+              }
             }
           },
           {
@@ -163,10 +168,19 @@
   },
   "active": "505b4bbc8a7e15f6",
   "lastOpenFiles": [
+    "Semester 2/Database Systems/Week 4/Week 4 Database Systems.md",
+    "Semester 2/Database Systems/Week 4",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL78.class",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL78.java",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL75.class",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL75.java",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL74.class",
+    "Semester 2/Programming 2/Project/Part 1/__SHELL74.java",
+    "Semester 2/Programming 2/Project/Part 1/item_data_1.txt",
+    "Semester 2/Programming 2/Project/Part 1/Library.java#",
+    "Semester 2/Programming 2/Project/Part 1/LibraryItem.java#",
     "Semester 2/HCI/Week 2/Week 2 Human Computer Interfaces.md",
     "Semester 2/HCI/Week 3/Week 3 Human Computer Interfaces.md",
-    "Semester 1/Database Systems/Exercise Booklet.pdf",
-    "Semester 2/HCI/Week 3",
     "Semester 1/Database Systems/Week 10/Week 10 Database Systems.md",
     "Semester 1/Database Systems/Week 11/Week 11 Database Systems.md",
     "Semester 1/Database Systems/Week 5/Week 5 Database Systems.md",
@@ -178,11 +192,7 @@
     "Semester 1/Database Systems/Week 4/Week 4 Database Systems - Data Description Language.md",
     "Semester 1/Database Systems/Week 6/Week 6 Database Systems.md",
     "Semester 2/Database Systems/Week 3/Week 3 Database Systems.md",
-    "Semester 2/Computer Systems Internals & Linux/Week 3/q1.sh",
-    "Semester 2/Computer Systems Internals & Linux/Week 3",
-    "Semester 2/Database Systems/Exercise Booklet.pdf",
     "Semester 2/Database Systems/Week 2/Week 2 Database Systems.md",
-    "Semester 2/Database Systems/Week 3",
     "images/Pasted image 20240126103004.png",
     "images/Pasted image 20240126102902.png",
     "images/Pasted image 20240126101454.png",
@@ -192,11 +202,7 @@
     "CCNA/1 - Networking Today/1.2 - Network Components.md",
     "images/Pasted image 20240125163704.png",
     "CCNA/1 - Networking Today/1.1 - Networks Affect our Lives.md",
-    "CCNA/1 - Networking Today",
     "CCNA/Module Information.md",
-    "CCNA",
-    "Semester 2/Computer Systems Internals & Linux/Week 2/media/geese_honk_on_public_farm_with_people_in_background_uk.mp3",
-    "Semester 2/Computer Systems Internals & Linux/Week 2/media/freethunderstormtimelapse.mov",
     "Semester 2/Computer Systems Internals & Linux/Week 2/media/freeimage-7063371.jpg",
     "Semester 2/Computer Systems Internals & Linux/Week 2/media/freeimage-5931627.jpg",
     "Semester 2/Computer Systems Internals & Linux/Week 2/media/freeimage-216999.jpg",

Semester 2/Database Systems/Week 4/Week 4 Database Systems.md

@@ -0,0 +1 @@
+# 

Semester 2/Programming 2/Project/Part 1/Library.ctxt

@@ -4,6 +4,10 @@ comment0.target=Library()
 comment0.text=\n\ Constructor\ for\ objects\ of\ class\ Library\n
 comment1.params=item
 comment1.target=void\ storeItem(LibraryItem)
+comment1.text=\n\ Appends\ a\ LibraryItem\ to\ the\ itemList.\n
 comment2.params=
 comment2.target=void\ printAllItems()
-numComments=3
+comment2.text=\n\ Prints\ to\ the\ terminal\ all\ items\ in\ the\ itemList\n
+comment3.params=
+comment3.target=void\ readItemData()
+numComments=4

Semester 2/Programming 2/Project/Part 1/Library.java

@@ -6,13 +6,21 @@
  * @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.Iterator;
+import java.util.Scanner;
+import java.io.File;
+import java.io.PrintWriter;
+import java.io.IOException;
+import java.awt.FileDialog;
+import java.awt.Frame;
 
 public class Library
 {
-    private ArrayList<LibraryItem> itemList;
+    private ArrayList<LibraryItem> itemList; // Initialise an ArrayList of name itemList to store LibraryItems
     
-    /**
+    /*
      * Constructor for objects of class Library
      */
     public Library()
@@ -20,11 +28,17 @@ public class 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 )
@@ -33,4 +47,34 @@ public class Library
         }
     }
     
+    public void readItemData() //throws IOException
+    {
+        try {
+            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.
+            
+            Scanner fileScanner = new Scanner( new File( fileBox.getDirectory() + fileBox.getFile() ) );
+            
+            while( fileScanner.hasNextLine() )
+            {
+                
+                String lineItem = fileScanner.nextLine();
+                
+                if ( !lineItem.contains( "//" ) && !lineItem.trim().isEmpty() ) { // Ensure no comments or empty lines are included
+                    
+                    Scanner detailScanner = new Scanner ( lineItem ).useDelimiter(","); // Create a new scanner to grab the values in a comma separated list
+                    
+                    LibraryItem libraryItem = new LibraryItem();
+                    libraryItem.readData( detailScanner );
+
+                    storeItem( libraryItem ); // Store the new LibraryItem in the itemList
+                    
+                }
+            }
+        }
+        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." );
+        }
+    }
 }

Semester 2/Programming 2/Project/Part 1/LibraryItem.ctxt

@@ -3,28 +3,33 @@ comment0.params=title\ itemCode\ cost\ timesBorrowed\ onLoan
 comment0.target=LibraryItem(java.lang.String,\ java.lang.String,\ int,\ int,\ boolean)
 comment0.text=\n\ Constructor\ for\ objects\ of\ class\ LibraryItem\n
 comment1.params=
-comment1.target=java.lang.String\ getTitle()
+comment1.target=LibraryItem()
-comment1.text=\n\ Field\ Accessor\ Start\n
+comment1.text=\n\ Default\ constructor\ for\ object\ of\ class\ LibraryItem\n
-comment10.params=onLoan
+comment10.params=timesBorrowed
-comment10.target=void\ setOnLoan(boolean)
+comment10.target=void\ setTimesBorrowed(int)
-comment11.params=
+comment11.params=onLoan
-comment11.target=void\ printDetails()
+comment11.target=void\ setOnLoan(boolean)
-comment11.text=\n\ Field\ Mutator\ End\n
+comment12.params=
+comment12.target=void\ printDetails()
+comment12.text=\n\ Field\ Mutator\ End\n
+comment13.params=detailScanner
+comment13.target=void\ readData(java.util.Scanner)
 comment2.params=
-comment2.target=java.lang.String\ getItemCode()
+comment2.target=java.lang.String\ getTitle()
+comment2.text=\n\ Field\ Accessor\ Start\n
 comment3.params=
-comment3.target=int\ getCost()
+comment3.target=java.lang.String\ getItemCode()
 comment4.params=
-comment4.target=int\ getTimesBorrowed()
+comment4.target=int\ getCost()
 comment5.params=
-comment5.target=boolean\ getOnLoan()
+comment5.target=int\ getTimesBorrowed()
-comment6.params=title
+comment6.params=
-comment6.target=void\ setTitle(java.lang.String)
+comment6.target=boolean\ getOnLoan()
-comment6.text=\n\ Field\ Accessor\ End\n\ \n\ Field\ Mutator\ Start\n
+comment7.params=title
-comment7.params=itemCode
+comment7.target=void\ setTitle(java.lang.String)
-comment7.target=void\ setItemCode(java.lang.String)
+comment7.text=\n\ Field\ Accessor\ End\n\ \n\ Field\ Mutator\ Start\n
-comment8.params=cost
+comment8.params=itemCode
-comment8.target=void\ setCost(int)
+comment8.target=void\ setItemCode(java.lang.String)
-comment9.params=timesBorrowed
+comment9.params=cost
-comment9.target=void\ setTimesBorrowed(int)
+comment9.target=void\ setCost(int)
-numComments=12
+numComments=14

Semester 2/Programming 2/Project/Part 1/LibraryItem.java

@@ -5,6 +5,10 @@
  * @author (your name) 
  * @version (a version number or a date)
  */
+
+import java.util.Scanner;
+import java.util.ArrayList;
+
 public class LibraryItem
 {
     // instance variables - replace the example below with your own
@@ -26,6 +30,18 @@ public class LibraryItem
         this.onLoan = onLoan;
     }
     
+    /*
+     * Default constructor for object of class LibraryItem
+     */
+    public LibraryItem()
+    {
+        title = "";
+        itemCode = "";
+        cost = 0;
+        timesBorrowed = 0;
+        onLoan = false;
+    }
+    
     /*
      * Field Accessor Start
      */
@@ -94,10 +110,16 @@ public class LibraryItem
     {
         System.out.println( title + " with an item code " + itemCode + " has been borrowed " + timesBorrowed + " times.");
         if( onLoan )
-            System.out.println( "This item is at present on loan and when new cost " + cost + " pence." );
+            System.out.println( "This item is at present on loan and when new cost " + cost + " pence.\n" );
         else 
-            System.out.println( "This item is at present not on loan and when new cost " + cost + " pence." );
+            System.out.println( "This item is at present not on loan and when new cost " + cost + " pence.\n" );
     }
     
-    
+    public void readData( Scanner detailScanner ) {
+        this.title = detailScanner.next();
+        this.itemCode = detailScanner.next();
+        this.cost = Integer.parseInt( detailScanner.next() );
+        this.timesBorrowed = Integer.parseInt( detailScanner.next() );
+        this.onLoan = Boolean.parseBoolean( detailScanner.next() );
+    }
 }

Semester 2/Programming 2/Project/Part 1/item_data_1.txt

@@ -0,0 +1,12 @@
+// this is a comment, any lines that start with //
+// (and blank lines) should be ignored
+
+
+// data is title, itemCode, cost, timesBorrowed, onLoan
+Objects First with Java, LM002411,3989,781,true
+Compilers: Principles Techniques and Tools, LM002711,599,0,FALSE
+C# How to Program, LM002876,4599,45,TRUE
+Unix Made Easy: The Basics and Beyond (Made Easy), LM002468,6395,0,TRUE
+Galerkin Finite Element Methods for Parabolic Problems, LM002153,4554,0,FALSE
+
+

Semester 2/Programming 2/Project/Part 1/package.bluej

@@ -1,3 +1,41 @@
 #BlueJ package file
-#Fri Feb 02 12:26:48 GMT 2024
+dependency1.from=Library
+dependency1.to=LibraryItem
+dependency1.type=UsesDependency
+objectbench.height=76
+objectbench.width=1900
+package.editor.height=874
+package.editor.width=1774
+package.editor.x=0
+package.editor.y=31
+package.numDependencies=1
+package.numTargets=2
+package.showExtends=true
+package.showUses=true
 project.charset=UTF-8
+target1.editor.height=1049
+target1.editor.width=960
+target1.editor.x=0
+target1.editor.y=31
+target1.height=50
+target1.name=LibraryItem
+target1.naviview.expanded=true
+target1.showInterface=false
+target1.type=ClassTarget
+target1.typeParameters=
+target1.width=100
+target1.x=70
+target1.y=10
+target2.editor.height=1049
+target2.editor.width=960
+target2.editor.x=960
+target2.editor.y=31
+target2.height=50
+target2.name=Library
+target2.naviview.expanded=true
+target2.showInterface=false
+target2.type=ClassTarget
+target2.typeParameters=
+target2.width=80
+target2.x=170
+target2.y=60

Semester 2/Programming 2/Week 1/zoo-io-v3/package.bluej

@@ -6,11 +6,11 @@ dependency2.from=ZooApp
 dependency2.to=Zoo
 dependency2.type=UsesDependency
 objectbench.height=76
-objectbench.width=686
+objectbench.width=1900
-package.editor.height=400
+package.editor.height=874
-package.editor.width=560
+package.editor.width=1774
-package.editor.x=774
+package.editor.x=0
-package.editor.y=277
+package.editor.y=31
 package.numDependencies=2
 package.numTargets=3
 package.showExtends=true