diff --git a/src/de/dhbwstuttgart/bytecode/AStatement.java b/src/de/dhbwstuttgart/bytecode/AStatement.java
new file mode 100644
index 00000000..5c28bf43
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/AStatement.java
@@ -0,0 +1,30 @@
+package de.dhbwstuttgart.bytecode;
+
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+import de.dhbwstuttgart.syntaxtree.statement.BinaryExpr;
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+
+public abstract class AStatement implements IStatement {
+	protected Expression expr;
+	
+	public AStatement(Expression expr) {
+		this.expr = expr;
+	}
+	
+	@Override
+	public boolean isExprBinary() {
+		return (expr instanceof BinaryExpr);
+	}
+	
+	@Override
+	public void genBCForRelOp(MethodVisitor mv,Label branchLabel, Label endLabel, BytecodeGenMethod bytecodeGenMethod) {
+		mv.visitInsn(Opcodes.ICONST_1);
+		mv.visitJumpInsn(Opcodes.GOTO, endLabel);
+		mv.visitLabel(branchLabel);
+		mv.visitInsn(Opcodes.ICONST_0);
+		mv.visitLabel(endLabel);
+	}
+}
diff --git a/src/de/dhbwstuttgart/bytecode/ArgumentExpr.java b/src/de/dhbwstuttgart/bytecode/ArgumentExpr.java
new file mode 100644
index 00000000..b396e8d1
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/ArgumentExpr.java
@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.bytecode;
+
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+
+public class ArgumentExpr extends AStatement {
+	
+	public ArgumentExpr(Expression expr) {
+		super(expr);
+	}
+	
+}
diff --git a/src/de/dhbwstuttgart/bytecode/AssignStmt.java b/src/de/dhbwstuttgart/bytecode/AssignStmt.java
new file mode 100644
index 00000000..366c450a
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/AssignStmt.java
@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.bytecode;
+
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+
+public class AssignStmt extends AStatement {
+	
+	public AssignStmt(Expression rightSide) {
+		super(rightSide);
+	}
+
+}
diff --git a/src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java b/src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
index c00c152a..8b928a31 100644
--- a/src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
+++ b/src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
@@ -55,6 +55,8 @@ public class BytecodeGenMethod implements StatementVisitor {
 	HashMap<String, String> genericsAndBoundsMethod;
 	private HashMap<String, String> genericsAndBounds;
 	private boolean isBinaryExp = false;
+	
+	private IStatement statement;
 
 	// for tests **
 	private String fieldName;
@@ -148,6 +150,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(Assign assign) {
+		statement = new AssignStmt(assign.rightSide);
 		isAssignStmt = true;
 		
 		// if the right side is a lambda => the left side must be a functional interface
@@ -157,8 +160,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 			isRightSideALambda = false;
 		}
 
-		if (assign.rightSide instanceof BinaryExpr)
-			isBinaryExp = true;
+		isBinaryExp = statement.isExprBinary();
 			
 
 		if (assign.lefSide instanceof AssignToField) {
@@ -198,7 +200,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 		Label endLabel = new Label();
 		// this case for while loops
-		if(!isAssignStmt)
+		if(statement instanceof LoopStmt)
 			mv.visitLabel(endLabel);
 		
 		binary.lexpr.accept(this);
@@ -341,18 +343,9 @@ public class BytecodeGenMethod implements StatementVisitor {
 			default:
 				break;
 			}
-			if(isAssignStmt) {
-				mv.visitInsn(Opcodes.ICONST_1);
-				mv.visitJumpInsn(Opcodes.GOTO, endLabel);
-				mv.visitLabel(branchLabel);
-				mv.visitInsn(Opcodes.ICONST_0);
-				mv.visitLabel(endLabel);
-			} else {
-				loopBlock.accept(this);
-				mv.visitJumpInsn(Opcodes.GOTO, endLabel);
-				
-				mv.visitLabel(branchLabel);
-			}
+			
+			statement.genBCForRelOp(mv, branchLabel, endLabel,this);
+			
 			break;
 		}
 	}
@@ -375,18 +368,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 		default:
 			break;
 		}
-		if(isAssignStmt) {
-			mv.visitInsn(Opcodes.ICONST_1);
-			mv.visitJumpInsn(Opcodes.GOTO, endLabel);
-			mv.visitLabel(branchLabel);
-			mv.visitInsn(Opcodes.ICONST_0);
-			mv.visitLabel(endLabel);
-		} else {
-			loopBlock.accept(this);
-			mv.visitJumpInsn(Opcodes.GOTO, endLabel);
-			
-			mv.visitLabel(branchLabel);
-		}
+		statement.genBCForRelOp(mv, branchLabel, endLabel, this);
 		
 	}
 
@@ -644,6 +626,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(MethodCall methodCall) {
+		
 		methodCall.receiver.accept(this);
 		methodCall.arglist.accept(this);
 
@@ -667,7 +650,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(NewClass methodCall) {
-
+		
 		mv.visitTypeInsn(Opcodes.NEW, methodCall.name.replace(".", "/"));
 		mv.visitInsn(Opcodes.DUP);
 		// creates Descriptor
@@ -776,8 +759,10 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(Return aReturn) {
-		if(aReturn.retexpr instanceof BinaryExpr)
-			isBinaryExp = true;
+		
+		statement = new ReturnStmt(aReturn.retexpr);
+		
+		isBinaryExp = statement.isExprBinary();
 		
 		aReturn.retexpr.accept(this);
 		
@@ -818,10 +803,12 @@ public class BytecodeGenMethod implements StatementVisitor {
 
 	@Override
 	public void visit(WhileStmt whileStmt) {
+		
+		statement = new LoopStmt(whileStmt.expr, whileStmt.loopBlock);
 		this.loopBlock = whileStmt.loopBlock;
 		
-		if(whileStmt.expr instanceof BinaryExpr)
-			isBinaryExp = true;
+	
+		isBinaryExp = statement.isExprBinary();
 		
 		whileStmt.expr.accept(this);
 		
@@ -1030,6 +1017,7 @@ public class BytecodeGenMethod implements StatementVisitor {
 	@Override
 	public void visit(ArgumentList argumentList) {
 		for (Expression al : argumentList.getArguments()) {
+			statement = new ArgumentExpr(al);
 			al.accept(this);
 		}
 	}
diff --git a/src/de/dhbwstuttgart/bytecode/IStatement.java b/src/de/dhbwstuttgart/bytecode/IStatement.java
new file mode 100644
index 00000000..f8d61097
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/IStatement.java
@@ -0,0 +1,9 @@
+package de.dhbwstuttgart.bytecode;
+
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+
+public interface IStatement {
+	public boolean isExprBinary();
+	public void genBCForRelOp(MethodVisitor mv, Label branchLabel, Label endLabel, BytecodeGenMethod bytecodeGenMethod);
+}
diff --git a/src/de/dhbwstuttgart/bytecode/LoopStmt.java b/src/de/dhbwstuttgart/bytecode/LoopStmt.java
new file mode 100644
index 00000000..109efd34
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/LoopStmt.java
@@ -0,0 +1,25 @@
+package de.dhbwstuttgart.bytecode;
+
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+import de.dhbwstuttgart.syntaxtree.statement.Statement;
+
+public class LoopStmt extends AStatement {
+	
+    private Statement loopBlock;
+    
+    public LoopStmt(Expression expr, Statement loopBlock) {
+    		super(expr);
+    		this.loopBlock = loopBlock;
+    }
+
+	@Override
+	public void genBCForRelOp(MethodVisitor mv,Label branchLabel, Label endLabel, BytecodeGenMethod bytecodeGenMethod) {
+		this.loopBlock.accept(bytecodeGenMethod);
+		mv.visitJumpInsn(Opcodes.GOTO, endLabel);
+		mv.visitLabel(branchLabel);
+	}
+}
diff --git a/src/de/dhbwstuttgart/bytecode/ReturnStmt.java b/src/de/dhbwstuttgart/bytecode/ReturnStmt.java
new file mode 100644
index 00000000..bd747720
--- /dev/null
+++ b/src/de/dhbwstuttgart/bytecode/ReturnStmt.java
@@ -0,0 +1,14 @@
+package de.dhbwstuttgart.bytecode;
+
+import org.objectweb.asm.MethodVisitor;
+
+import de.dhbwstuttgart.syntaxtree.statement.BinaryExpr;
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+
+public class ReturnStmt extends AStatement {
+	
+	public ReturnStmt(Expression retexpr) {
+		super(retexpr);
+	}
+	
+}