Some semantic test case (valid & invalid ones)

semantic/class_addition.invalid.mj

+class Schuessel {
+  public static void main(String[] Schluessel) {
+    Schuessel schluessel = (new Schuessel()) + (new Schuessel());
+  }
+}
\ No newline at end of file

semantic/class_compare.invalid.mj

+class Glas {
+  public static void main(String[] glas) {
+    boolean ledlichtchen = (new Glas()) < (new Glas());
+  }
+}
\ No newline at end of file

semantic/lvalue_operation_binary.invalid.mj

+class IKEA {
+  public static void main(String[] baum) {
+    int a = 2;
+    int b = 5;
+    int c;
+
+    a = b;
+    a+(b) = c;
+  }
+}
\ No newline at end of file

semantic/lvalue_operation_unary.invalid.mj

+class IKEA {
+  public static void main(String[] baum) {
+    boolean a = true;
+    boolean c;
+    !a = c;
+  }
+}
\ No newline at end of file

semantic/main_multiple_in_different_classes.invalid.mj

+class Hello {
+  public static void main(String[] args) {
+
+  }
+}
+
+class World {
+  public static void main(String[] args) {
+
+  }
+}
\ No newline at end of file

semantic/main_multiple_in_same_class_one_static_one_not.invalid.mj

+class Hello {
+  public static void main(String[] args) {
+
+  }
+  public void main() {
+
+  }
+}
\ No newline at end of file

semantic/main_parameter_different_name.java

+class Blume {
+  public static void main(String[] nudel) {}
+}
\ No newline at end of file

semantic/method_multi_param_same_name.invalid.mj

+class Juhuu {
+  public static void main(String[] teekochgeraet) {
+    /* :) */
+  }
+
+  public Juhuu jippii(int buch, int buch) {}
+}
\ No newline at end of file

semantic/return_valid_classType.java

+class Origami {
+  public int republic;
+}
+
+class Miau {
+  public static void main(String[] hustenbonbon) {
+    Origami tasse = (new Miau()).klappe(4);
+  }
+
+  public Origami klappe(int baum) {
+    Origami aaaaaaaa = new Origami();
+    aaaaaaaa.republic = baum;
+    return aaaaaaaa;
+  }
+}
\ No newline at end of file

semantic/shadowing_apocalypse.java

+class Baumwurzelextrakt {
+  public int Baumwurzelextrakt;
+
+  public static void main(String[] Baumwurzelextrakt) {
+    Baumwurzelextrakt[] recursion = new Baumwurzelextrakt[800];
+    int i = 0;
+    while(i < 800) {
+      if(i == 0) {
+        recursion[i] = new Baumwurzelextrakt();
+      } else {
+        recursion[i] = new Baumwurzelextrakt();
+        recursion[i].Baumwurzelextrakt(recursion[i-1]);
+      }
+      i = 1 + i;
+    }
+  }
+
+  public Baumwurzelextrakt Baumwurzelextrakt(Baumwurzelextrakt keinBaumwurzelextrakt) {
+    {
+      int Baumwurzelextrakt = 5;
+      this.Baumwurzelextrakt = Baumwurzelextrakt + this.Baumwurzelextrakt;
+    }
+    {
+      Baumwurzelextrakt Baumwurzelextrakt = new Baumwurzelextrakt();
+      Baumwurzelextrakt(new Baumwurzelextrakt());
+    }
+
+    return null;
+  }
+}
\ No newline at end of file

semantic/system_shadowing_with_field.java

+class NotSystem {
+  public Out System;
+  public static void main(String[] garage) {
+  }
+
+  public void rolle() {
+    System.out.println(5);
+  }
+}
+
+class Out {
+  public Out out;
+  public void println(int haeuschen) {
+    /* fertig */
+  }
+}

semantic/system_shadowing_with_localVar.java

+class System {
+  public Out out;
+  public static void main(String[] garage) {
+  }
+  public void nochNeRolle() {
+    System System = new System();
+    System.out.println(5);
+  }
+}
+
+class Out {
+  public void println(int haeuschen) {
+    /* fertig */
+  }
+}