diff --git a/src/org/eidecker/oca8lernen/general/PrimitiveUndWrapperTest.java b/src/org/eidecker/oca8lernen/general/PrimitiveUndWrapperTest.java
index 14092f4..e5df14c 100644
--- a/src/org/eidecker/oca8lernen/general/PrimitiveUndWrapperTest.java
+++ b/src/org/eidecker/oca8lernen/general/PrimitiveUndWrapperTest.java
@@ -1,5 +1,9 @@
 package org.eidecker.oca8lernen.general;
 
+import com.sun.xml.internal.ws.api.message.HeaderList;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.List;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertFalse;
@@ -19,6 +23,11 @@ public class PrimitiveUndWrapperTest {
 		int aInt = 1;
 		long aLong = 1L;
 
+		int i = 1;
+		float f = 3;
+
+		double d = 2;
+
 		assertFalse(aIntegerType.equals(aLongType));
 		assertTrue(aInt == aLong);
 
@@ -35,4 +44,57 @@ public class PrimitiveUndWrapperTest {
 
 	}
 
+	@Test
+	public void standardType() {
+		typeTest(1);
+		typeTest(2.1);
+
+	}
+
+
+	private void typeTest(int i) {
+		System.out.println("int");
+	}
+
+	private void typeTest(long i) {
+		System.out.println("long");
+	}
+
+	private void typeTest(float i) {
+		System.out.println("float");
+	}
+
+	private void typeTest(double i) {
+		System.out.println("double");
+	}
+
+	public static void  main(String... args) {
+		new PrimitiveUndWrapperTest().stringConcat();
+	}
+
+
+	@Test
+	public void stringConcat() throws Exception {
+		System.out.println(4 + 3 + "" + 3 + 5);
+		"asdadada".length();
+	}
 }
+
+
+
+
+class Ober {
+
+	ArrayList getList() {
+		return null;
+	}
+}
+
+class Unter extends Ober {
+	@Override
+	HeaderList getList() {
+		new Character()
+		super.getList().size()
+		return null;
+	}
+}
\ No newline at end of file