diff --git a/src/UMLClass.java b/src/UMLClass.java
index cacc554..58bcc24 100644
--- a/src/UMLClass.java
+++ b/src/UMLClass.java
@@ -2,11 +2,11 @@ import java.util.ArrayList;
 
 public class UMLClass {
 
-    private String name;
-    private String packageString;
+    private final String name;
+    private final String packageString;
 
-    private ArrayList<UMLField> fields = new ArrayList<>();
-    private ArrayList<UMLMethod> methods = new ArrayList<>();
+    private final ArrayList<UMLField> fields = new ArrayList<>();
+    private final ArrayList<UMLMethod> methods = new ArrayList<>();
 
     public UMLClass(String classDiagram, String packageString) {
 
diff --git a/src/UMLConverterMain.java b/src/UMLConverterMain.java
index efbee3d..f1ee0f4 100644
--- a/src/UMLConverterMain.java
+++ b/src/UMLConverterMain.java
@@ -1,5 +1,4 @@
 import javax.swing.*;
-import java.awt.*;
 
 public class UMLConverterMain {
 
diff --git a/src/UMLField.java b/src/UMLField.java
index 34e4da0..e00b460 100644
--- a/src/UMLField.java
+++ b/src/UMLField.java
@@ -1,8 +1,8 @@
 public class UMLField {
 
-    private String dataType;
-    private String name;
-    private String encapsulation;
+    private final String dataType;
+    private final String name;
+    private final String encapsulation;
 
     private boolean valid;
 
diff --git a/src/UMLManager.java b/src/UMLManager.java
index 8eea906..d66e130 100644
--- a/src/UMLManager.java
+++ b/src/UMLManager.java
@@ -1,5 +1,4 @@
 import java.io.BufferedWriter;
-import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
diff --git a/src/UMLMethod.java b/src/UMLMethod.java
index 1a535ce..5b28f33 100644
--- a/src/UMLMethod.java
+++ b/src/UMLMethod.java
@@ -2,21 +2,13 @@ import java.util.ArrayList;
 
 public class UMLMethod {
 
-    private String returnType;
-    private String name;
-    private String encapsulation;
+    private final String returnType;
+    private final String name;
+    private final String encapsulation;
 
     private ArrayList<String> argsNames = new ArrayList<>();
     private ArrayList<String> argsTypes = new ArrayList<>();
 
-    public UMLMethod(String encapsulation, String returnType, String name, ArrayList<String> argsNames, ArrayList<String> argsTypes) {
-        this.returnType = returnType;
-        this.name = name;
-        this.argsNames = argsNames;
-        this.argsTypes = argsTypes;
-        this.encapsulation = encapsulation;
-    }
-
     public UMLMethod(String line, String className) {
 
         //First, format it nicely