diff --git a/syntax/Add.valid.mj b/syntax/Add.valid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..19830bbdda817033325ac6c0f0a506aa346a3323
--- /dev/null
+++ b/syntax/Add.valid.mj
@@ -0,0 +1,5 @@
+class Add {
+    public int add(int a, int b) {
+        return a + b;
+    }
+}
diff --git a/syntax/Braces.valid.mj b/syntax/Braces.valid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..efc275035ec8beea8ae36fabec460bc26f891f1a
--- /dev/null
+++ b/syntax/Braces.valid.mj
@@ -0,0 +1,8 @@
+class PrivateMember {
+
+    public int[][][] test;
+	
+	public int foo() {
+        {}{}{{}}
+    }
+}
diff --git a/syntax/CSyntax.invalid.mj b/syntax/CSyntax.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..4e9fbe6483df01382055a6cd0a12742db0553791
--- /dev/null
+++ b/syntax/CSyntax.invalid.mj
@@ -0,0 +1,8 @@
+class PrivateMember {
+
+    int test[];
+	
+	private int foo() {
+        return 0;
+    }
+}
diff --git a/syntax/DerCompilerMain.valid.mj b/syntax/DerCompilerMain.valid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..527a9e1a784ae08d189e494cbaa4b68898b8a88c
--- /dev/null
+++ b/syntax/DerCompilerMain.valid.mj
@@ -0,0 +1,23 @@
+class DerCompiler {
+
+    public static void main(String[] args){
+        CommandLineBuilder clb = new CommandLineBuilder();
+        clb.parseArguments(args);
+
+        CommandLineOptions options = clb.parseArguments(args);
+
+        CompilerSetup.setupGlobalValues(options);
+        Action action = new CompilerSetup().parseAction(options);
+
+        boolean showHelp = options.help();
+
+        options.finish();
+
+        if (showHelp) {
+            action.help();
+        } else {
+            action.run();
+        }
+        System.exit(0);
+    }
+}
diff --git a/syntax/Foo.invalid.mj b/syntax/Foo.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..8b6f8e73b8e8ee7c5b32e37122df8a6ddfb643b7
--- /dev/null
+++ b/syntax/Foo.invalid.mj
@@ -0,0 +1,5 @@
+class FooTester2 {
+	public boolean isFoo(String maybeFoo; String definitelyFoo) {
+		return maybeFoo _ definitelyFoo;
+	}
+}
diff --git a/syntax/Foo.valid.mj b/syntax/Foo.valid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..31a976565c751022bd397d4f52e1a5a91966afbe
--- /dev/null
+++ b/syntax/Foo.valid.mj
@@ -0,0 +1,6 @@
+class FooTester {
+	public void foo() {}
+	public boolean isFoo(String maybeFoo, String definitelyFoo) {
+		return maybeFoo == definitelyFoo;
+	}
+}
diff --git a/syntax/MultipleReturnStatements.valid.mj b/syntax/MultipleReturnStatements.valid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..eb333336c3f6cee7e9b84477837a8684088323cb
--- /dev/null
+++ b/syntax/MultipleReturnStatements.valid.mj
@@ -0,0 +1,20 @@
+class PrivateMember {
+
+    public int test;
+	
+	public static void foo(int a) {
+        
+    }
+	
+	public String test; 
+}
+
+class irgendwas{
+
+	public static void fib(Integer i){
+		return fib(1);
+		return fib(test);
+		
+		return;
+	}
+}
diff --git a/syntax/PrivateMethod.invalid.mj b/syntax/PrivateMethod.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..ea7f56984527d876c2f0a218c491b3c90e7c1536
--- /dev/null
+++ b/syntax/PrivateMethod.invalid.mj
@@ -0,0 +1,6 @@
+class PrivateMember {
+
+    private int foo() {
+        return 0;
+    }
+}
diff --git a/syntax/ReturnWhile.invalid.mj b/syntax/ReturnWhile.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..af122f97ddd8a44e136e607e746edf56ff1cfb35
--- /dev/null
+++ b/syntax/ReturnWhile.invalid.mj
@@ -0,0 +1,7 @@
+class ReturnWhile {
+
+    public void returnWhile() {
+        return while(true);
+    }
+
+}
diff --git a/syntax/UseFor.invalid.mj b/syntax/UseFor.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..b4b88697f7d966011ebc4993968094ee2e9249e2
--- /dev/null
+++ b/syntax/UseFor.invalid.mj
@@ -0,0 +1,13 @@
+class UseFor {
+
+    public int[] foo;
+
+    public void useFor() {
+
+        foo = new int[10];
+
+        for (int i = 0; i < 10; i++) {
+            foo[i] = 0;
+        }
+    }
+}