diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/NewArray.java b/src/de/dhbwstuttgart/syntaxtree/statement/NewArray.java
index 01dcba2c1..7595175f5 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/NewArray.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/NewArray.java
@@ -4,7 +4,7 @@ import java.util.List;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
 import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 
 public class NewArray extends Expression
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/NewClass.java b/src/de/dhbwstuttgart/syntaxtree/statement/NewClass.java
index 7cc707d62..ba13e83ee 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/NewClass.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/NewClass.java
@@ -18,7 +18,7 @@ import de.dhbwstuttgart.typeinference.constraints.ConstraintsFactory;
 import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.unify.model.PairOperator;
 import org.antlr.v4.runtime.Token;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 
 public class NewClass extends MethodCall
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java b/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
index 9a664ba09..350c748f6 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
@@ -3,8 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
 import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceInformation;
-
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 
 public class PostIncExpr extends UnaryExpr
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/Super.java b/src/de/dhbwstuttgart/syntaxtree/statement/Super.java
index 8151f0eb4..47f5d8cc0 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/Super.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/Super.java
@@ -4,7 +4,7 @@ import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
 import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceInformation;
 import org.antlr.v4.runtime.Token;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 public class Super extends Expression
 {
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/This.java b/src/de/dhbwstuttgart/syntaxtree/statement/This.java
index 6fab28fa8..25d732e5f 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/This.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/This.java
@@ -11,7 +11,7 @@ import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.unify.model.PairOperator;
 import org.antlr.v4.runtime.Token;
 import org.antlr.v4.runtime.atn.SemanticContext;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 public class This extends Expression
 {
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/UnaryPlus.java b/src/de/dhbwstuttgart/syntaxtree/statement/UnaryPlus.java
index cb174f349..7c0caf100 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/UnaryPlus.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/UnaryPlus.java
@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
 import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceInformation;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 public class UnaryPlus extends Expression
 {
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/WhileStmt.java b/src/de/dhbwstuttgart/syntaxtree/statement/WhileStmt.java
index 1070639dd..7641efb31 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/WhileStmt.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/WhileStmt.java
@@ -4,7 +4,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
 import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
 import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceInformation;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
+import de.dhbwstuttgart.exceptions.NotImplementedException;
 
 public class WhileStmt extends Statement
 {