diff --git a/src/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java b/src/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java
index e4812898..6057c3e5 100644
--- a/src/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java
+++ b/src/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java
@@ -32,11 +32,11 @@ public class ASTFactory {
 		names = scope;
 	}
 
-	public static Method createEmptyMethod(String withSignature, Class parent) {
+	public Method createEmptyMethod(String withSignature, Class parent) {
 		return  ASTFactory.createMethod(withSignature, new ParameterList(), new Block(), parent);
 	}
 
-	public static Constructor createEmptyConstructor(Class parent){
+	public Constructor createEmptyConstructor(Class parent){
 		Block block = new Block();
 		block.setType(new de.dhbwstuttgart.syntaxtree.type.Void(block, 0));
 		block.statements.add(new SuperCall(block));
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/MethodCall.java b/src/de/dhbwstuttgart/syntaxtree/statement/MethodCall.java
index cf77d708..91fe59ab 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/MethodCall.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/MethodCall.java
@@ -36,7 +36,7 @@ import de.dhbwstuttgart.typeinference.exceptions.TypeinferenceException;
 public class MethodCall extends Expr
 {
 	public MethodCall(Receiver receiver, String methodName, ArgumentList argumentList, int offset){
-		this(offset, 0);
+		this(offset);
 		this.set_Receiver(receiver);
 		this.set_Name(methodName);
 		this.set_ArgumentList(argumentList);
diff --git a/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java b/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
index 2fbb058f..7873d1b7 100755
--- a/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
+++ b/src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java
@@ -50,14 +50,10 @@ public class PostIncExpr extends UnaryExpr
     public String get_Name()
     {
     return null;
-    }
-
-    public void wandleRefTypeAttributes2GenericAttributes(Menge<Type> paralist, Menge<GenericTypeVar> genericMethodParameters)
-    {
     }
 
 	@Override
-public JavaCodeResult printJavaCode(ResultSet resultSet) {
+	public JavaCodeResult printJavaCode(ResultSet resultSet) {
 		JavaCodeResult ret = new JavaCodeResult();
 		ret.attach(this.expr.printJavaCode(resultSet));
 		ret.attach("++");