diff --git a/build/classes/library/Album.class b/build/classes/library/Album.class
index bfce847..7228219 100644
Binary files a/build/classes/library/Album.class and b/build/classes/library/Album.class differ
diff --git a/build/classes/library/AlbumFieldPattern.class b/build/classes/library/AlbumFieldPattern.class
index 54b566d..c0708a2 100644
Binary files a/build/classes/library/AlbumFieldPattern.class and b/build/classes/library/AlbumFieldPattern.class differ
diff --git a/build/classes/library/Book.class b/build/classes/library/Book.class
index d00828c..5348abd 100644
Binary files a/build/classes/library/Book.class and b/build/classes/library/Book.class differ
diff --git a/build/classes/library/BookFieldPattern.class b/build/classes/library/BookFieldPattern.class
index 9e1990f..b831827 100644
Binary files a/build/classes/library/BookFieldPattern.class and b/build/classes/library/BookFieldPattern.class differ
diff --git a/build/classes/library/Item.class b/build/classes/library/Item.class
index f2abe1a..8d1d869 100644
Binary files a/build/classes/library/Item.class and b/build/classes/library/Item.class differ
diff --git a/build/classes/library/Movie.class b/build/classes/library/Movie.class
index a8bc7f1..44627d7 100644
Binary files a/build/classes/library/Movie.class and b/build/classes/library/Movie.class differ
diff --git a/build/classes/library/MovieFieldPattern$1.class b/build/classes/library/MovieFieldPattern$1.class
index 8258a23..a6e2d7b 100644
Binary files a/build/classes/library/MovieFieldPattern$1.class and b/build/classes/library/MovieFieldPattern$1.class differ
diff --git a/build/classes/library/MovieFieldPattern$2.class b/build/classes/library/MovieFieldPattern$2.class
index 050a8e1..a030694 100644
Binary files a/build/classes/library/MovieFieldPattern$2.class and b/build/classes/library/MovieFieldPattern$2.class differ
diff --git a/build/classes/library/MovieFieldPattern$3.class b/build/classes/library/MovieFieldPattern$3.class
index 77a465f..f258b3e 100644
Binary files a/build/classes/library/MovieFieldPattern$3.class and b/build/classes/library/MovieFieldPattern$3.class differ
diff --git a/build/classes/library/MovieFieldPattern$4.class b/build/classes/library/MovieFieldPattern$4.class
index 225a062..03f7714 100644
Binary files a/build/classes/library/MovieFieldPattern$4.class and b/build/classes/library/MovieFieldPattern$4.class differ
diff --git a/build/classes/library/MovieFieldPattern.class b/build/classes/library/MovieFieldPattern.class
index f4d794c..696b63e 100644
Binary files a/build/classes/library/MovieFieldPattern.class and b/build/classes/library/MovieFieldPattern.class differ
diff --git a/nbproject/private/private.xml b/nbproject/private/private.xml
index 8c75c96..67a401a 100644
--- a/nbproject/private/private.xml
+++ b/nbproject/private/private.xml
@@ -8,6 +8,7 @@
             <file>file:/D:/PROJEKT/Library/src/library/MainMenu.java</file>
             <file>file:/D:/PROJEKT/Library/src/library/Item.java</file>
             <file>file:/D:/PROJEKT/Library/src/library/Validation.java</file>
+            <file>file:/D:/PROJEKT/Library/src/library/Album.java</file>
             <file>file:/D:/PROJEKT/Library/src/library/AlbumFieldPattern.java</file>
             <file>file:/D:/PROJEKT/Library/src/library/Book.java</file>
             <file>file:/D:/PROJEKT/Library/src/library/Database.java</file>
diff --git a/src/library/Album.java b/src/library/Album.java
index dab8af8..ef4056a 100644
--- a/src/library/Album.java
+++ b/src/library/Album.java
@@ -5,6 +5,8 @@
  */
 package library;
 
+import java.sql.SQLException;
+
 /**
  *
  * @author Agnieszka
@@ -36,17 +38,21 @@ public class Album extends Item {
     }
 
     @Override
-    public void insertToDB() {
-        d.insertAlbumQ(this);
+    public void insertToDB() throws SQLException {
+        try {
+            d.insertAlbumQ(this);
+        } catch (SQLException ex) {
+            throw new SQLException("Error dodawania albumu");
+        }
     }
 
     @Override
-    public void delFromDB() {
+    public void delFromDB() throws SQLException {
 
     }
 
     @Override
-    public void editInDB() {
+    public void editInDB() throws SQLException {
 
     }
 
diff --git a/src/library/AlbumFieldPattern.java b/src/library/AlbumFieldPattern.java
index 3305d5d..0d0ce3e 100644
--- a/src/library/AlbumFieldPattern.java
+++ b/src/library/AlbumFieldPattern.java
@@ -5,6 +5,7 @@
  */
 package library;
 
+import java.sql.SQLException;
 import javax.swing.JFrame;
 import javax.swing.JOptionPane;
 
@@ -17,7 +18,6 @@ public class AlbumFieldPattern extends javax.swing.JFrame {
     /**
      * Creates new form bookFieldPattern
      */
-    
     public AlbumFieldPattern() {
         this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         initComponents();
@@ -28,7 +28,7 @@ public class AlbumFieldPattern extends javax.swing.JFrame {
         this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         albumTitle.setInputVerifier(new library.Validation("[a-zA-z0-9]+", required));
     }
-    public boolean add = false, delete = false, edit = false, search=false;
+    public boolean add = false, delete = false, edit = false, search = false;
 
     /**
      * This method is called from within the constructor to initialize the form.
@@ -174,15 +174,19 @@ public class AlbumFieldPattern extends javax.swing.JFrame {
 
     private void SaveChangesActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveChangesActionPerformed
         if (this.add) {
-            Album a = new Album(0, albumTitle.getText(), musican.getText(), Integer.parseInt(year.getText()), Category.getSelectedItem().toString());
-            a.insertToDB();
-            this.dispose();
+            try {
+                Album a = new Album(0, albumTitle.getText(), musican.getText(), Integer.parseInt(year.getText()), Category.getSelectedItem().toString());
+                a.insertToDB();
+                this.dispose();
+            } catch (SQLException e) {
+                e.getMessage();
+            }
         } else if (this.edit) {
             JOptionPane.showMessageDialog(null, "EDYTUJ");
         } else if (this.delete) {
             JOptionPane.showMessageDialog(null, "USUŃ");
         }
-        
+
     }//GEN-LAST:event_SaveChangesActionPerformed
 
     private void yearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_yearActionPerformed
@@ -190,7 +194,7 @@ public class AlbumFieldPattern extends javax.swing.JFrame {
     }//GEN-LAST:event_yearActionPerformed
 
     private void cancelActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cancelActionPerformed
-       this.dispose();
+        this.dispose();
     }//GEN-LAST:event_cancelActionPerformed
 
     /**
diff --git a/src/library/Book.java b/src/library/Book.java
index 080db34..3d745ae 100644
--- a/src/library/Book.java
+++ b/src/library/Book.java
@@ -5,6 +5,10 @@
  */
 package library;
 
+import java.sql.SQLException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 /**
  *
  * @author Agnieszka
@@ -38,21 +42,25 @@ public class Book extends Item {
         tab[r][5] = b.getISBN();
         tab[r][6] = b.getPublishing();
         tab[r][7] = b.getCategory();
-    return tab ;
-}
-
-@Override
-        public void insertToDB() {
-        d.insertBookQ(this);
+        return tab;
     }
 
     @Override
-        public void delFromDB() {
+    public void insertToDB() throws SQLException {
+        try {
+            d.insertBookQ(this);
+        } catch (SQLException ex) {
+            throw new SQLException("Error dodawania ksiazki");
+        }
+    }
+
+    @Override
+    public void delFromDB()  throws SQLException  {
 
     }
 
     @Override
-        public void editInDB() {
+    public void editInDB()  throws SQLException {
 
     }
 
diff --git a/src/library/BookFieldPattern.java b/src/library/BookFieldPattern.java
index 9c1b7ca..f337725 100644
--- a/src/library/BookFieldPattern.java
+++ b/src/library/BookFieldPattern.java
@@ -251,9 +251,13 @@ public class BookFieldPattern extends javax.swing.JFrame {
 
     private void SaveChangesActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveChangesActionPerformed
         if (this.add) {
-
+            try{
             Book b = new Book(0, bookTitle.getText(), authorName.getText(), authorSurname.getText(), Integer.parseInt(year.getText()), ISBN.getText(), publishing.getText(), Category.getSelectedItem().toString());
             b.insertToDB();
+            }
+            catch(SQLException e){
+                e.getMessage();
+            }
 
         } else if (this.edit) {
             JOptionPane.showMessageDialog(null, "EDYTUJ");
diff --git a/src/library/Database.java b/src/library/Database.java
index 2ddec0f..ecd7be0 100644
--- a/src/library/Database.java
+++ b/src/library/Database.java
@@ -86,7 +86,7 @@ public class Database {
         return true;
     }
 
-    public void insertBookQ(Book b) {
+    public void insertBookQ(Book b) throws SQLException {
         try {
             PreparedStatement prepStmt = conn.prepareStatement(
                     "INSERT INTO books VALUES (NULL, ?, ?, ?, ?, ?, ?, ?);");
@@ -99,16 +99,15 @@ public class Database {
             prepStmt.setString(7, b.getCategory());
             prepStmt.execute();
             JOptionPane.showMessageDialog(null, "Dodano poprawnie.", "Informacja:", JOptionPane.INFORMATION_MESSAGE);
-            
-
         } catch (SQLException e) {
             JOptionPane.showMessageDialog(null, "Błąd przy dodawaniu do bazy", "Error:", JOptionPane.INFORMATION_MESSAGE);
             e.printStackTrace();
+            throw new SQLException("Error dodawania ksiazki");
         }
 
     }
 
-    public void insertAlbumQ(Album a) {
+    public void insertAlbumQ(Album a) throws SQLException {
         try {
             PreparedStatement prepStmt = conn.prepareStatement(
                     "INSERT INTO albums VALUES (NULL, ?, ?, ?, ?);");
@@ -121,14 +120,15 @@ public class Database {
         } catch (SQLException e) {
             JOptionPane.showMessageDialog(null, "Błąd przy dodawaniu albumu do bazy", "Error:", JOptionPane.INFORMATION_MESSAGE);
              e.printStackTrace();
+             throw new SQLException("Error dodawania albumu");
         }
 
     }
 
-    public void insertMovieQ(Movie m) {
+    public void insertMovieQ(Movie m) throws SQLException {
         try {
             PreparedStatement prepStmt = conn.prepareStatement(
-                    "INSER INTO movies VALUES (NULL, ?, ?, ?, ?);");
+                    "INSERT INTO movies VALUES (NULL, ?, ?, ?, ?);");
             prepStmt.setString(1, m.getName());
             prepStmt.setString(2, m.getDirector());
             prepStmt.setInt(3, m.getYear());
@@ -137,6 +137,8 @@ public class Database {
             JOptionPane.showMessageDialog(null, "Dodano poprawnie.", "Informacja:", JOptionPane.INFORMATION_MESSAGE);
         } catch (SQLException e) {
             JOptionPane.showMessageDialog(null, "Błąd przy dodawaniu do bazy", "Error:", JOptionPane.INFORMATION_MESSAGE);
+              e.printStackTrace();
+              throw new SQLException("Error dodawania albumu");
         }
 
     }
@@ -250,7 +252,7 @@ public class Database {
             }
         } catch (IndexOutOfBoundsException e) {
             JOptionPane.showMessageDialog(null, "Baza danych pusta", "Error:", JOptionPane.INFORMATION_MESSAGE);
-            throw new IndexOutOfBoundsException("Nie mozna dzielić przez 0");
+            throw new IndexOutOfBoundsException("Poza zakresem");
         }
 
         return null;
diff --git a/src/library/Item.java b/src/library/Item.java
index 41a6665..980a050 100644
--- a/src/library/Item.java
+++ b/src/library/Item.java
@@ -5,6 +5,8 @@
  */
 package library;
 
+import java.sql.SQLException;
+
 /**
  *
  * @author Agnieszka
@@ -12,11 +14,11 @@ package library;
  */
 public abstract class Item {
 
-    public abstract void insertToDB();
+    public abstract void insertToDB()  throws SQLException ;
 
-    public abstract void delFromDB();
+    public abstract void delFromDB() throws SQLException ;
 
-    public abstract void editInDB();
+    public abstract void editInDB() throws SQLException ;
 
     public void setName(String s) {
         this.name = s;
diff --git a/src/library/Movie.java b/src/library/Movie.java
index 2d370f1..c276a11 100644
--- a/src/library/Movie.java
+++ b/src/library/Movie.java
@@ -45,17 +45,21 @@ public class Movie extends Item {
     }
 
     @Override
-    public void insertToDB() {
-        d.insertMovieQ(this);
+    public void insertToDB() throws SQLException {
+        try {
+            d.insertMovieQ(this);
+        } catch (SQLException ex) {
+            throw new SQLException("Error dodawania filmu");
+        }
     }
 
     @Override
-    public void delFromDB() {
+    public void delFromDB() throws SQLException {
         String query = "DELETE FROM books WHERE id=" + this.getId() + ";";
     }
 
     @Override
-    public void editInDB() {
+    public void editInDB() throws SQLException {
 
     }
 
diff --git a/src/library/MovieFieldPattern.java b/src/library/MovieFieldPattern.java
index 4bb7fa4..14c7aab 100644
--- a/src/library/MovieFieldPattern.java
+++ b/src/library/MovieFieldPattern.java
@@ -5,6 +5,7 @@
  */
 package library;
 
+import java.sql.SQLException;
 import javax.swing.JFrame;
 import javax.swing.JOptionPane;
 
@@ -27,7 +28,7 @@ public class MovieFieldPattern extends javax.swing.JFrame {
         this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
         movieTitle.setInputVerifier(new library.Validation("[a-zA-z0-9]+", required));
     }
-    public boolean add = false, delete = false, edit = false, search=false;
+    public boolean add = false, delete = false, edit = false, search = false;
 
     /**
      * This method is called from within the constructor to initialize the form.
@@ -172,14 +173,19 @@ public class MovieFieldPattern extends javax.swing.JFrame {
 
     private void SaveChangesActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_SaveChangesActionPerformed
         if (this.add) {
-            Movie m = new Movie(0, movieTitle.getText(), director.getText(), Integer.parseInt(year.getText()), Category.getSelectedItem().toString() );
-            m.insertToDB();
+            try {
+                Movie m = new Movie(0, movieTitle.getText(), director.getText(), Integer.parseInt(year.getText()), Category.getSelectedItem().toString());
+                m.insertToDB();
+                this.dispose();
+            } catch (SQLException e) {
+                e.getMessage();
+            }
         } else if (this.edit) {
             JOptionPane.showMessageDialog(null, "EDYTUJ");
         } else if (this.delete) {
             JOptionPane.showMessageDialog(null, "USUŃ");
         }
-       this.dispose();
+
     }//GEN-LAST:event_SaveChangesActionPerformed
 
     private void yearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_yearActionPerformed