diff --git a/semantic/array_access_not_a_statement.invalid.mj b/semantic/array_access_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..bdd08a16bf320e71a38bfd414fc8a28db8e960c5
--- /dev/null
+++ b/semantic/array_access_not_a_statement.invalid.mj
@@ -0,0 +1,10 @@
+class ArrayAccessNotAStatement {
+    public int[] test;
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+       test[1];
+    }
+}
+
diff --git a/semantic/array_access_on_non_array.invalid.mj b/semantic/array_access_on_non_array.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..507a7f8e6b016cca73c71f037654cc450fba82b5
--- /dev/null
+++ b/semantic/array_access_on_non_array.invalid.mj
@@ -0,0 +1,7 @@
+class Test {
+    public static void main(String[] args) {
+        int foo = 0;
+
+        int bar = foo[12];
+    }
+}
diff --git a/semantic/assign_to_parameter.java b/semantic/assign_to_parameter.java
new file mode 100644
index 0000000000000000000000000000000000000000..dab49c2ae903940c16e82ac31dd1f2c47953373c
--- /dev/null
+++ b/semantic/assign_to_parameter.java
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        
+    }
+    public void foo(int a) {
+        a = 5;
+    }
+}
diff --git a/semantic/boolean_constant_not_a_statement.invalid.mj b/semantic/boolean_constant_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..9bc4406fde1b75dbb68818367bb7b8009972304e
--- /dev/null
+++ b/semantic/boolean_constant_not_a_statement.invalid.mj
@@ -0,0 +1,6 @@
+class BooleanConstantNotAStatement {
+    public static void main(String[] args) {
+        true;
+    }
+}
+
diff --git a/semantic/compare_null_to_variable.java b/semantic/compare_null_to_variable.java
new file mode 100644
index 0000000000000000000000000000000000000000..731727587f18a5ce59de68f747fd9fcb1844fdbc
--- /dev/null
+++ b/semantic/compare_null_to_variable.java
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        Test test = new Test();
+        if (null == test) {
+            return;
+        }
+    }
+}
diff --git a/semantic/compare_variable_to_null.java b/semantic/compare_variable_to_null.java
new file mode 100644
index 0000000000000000000000000000000000000000..91c8feb82f0b2ed9ae202ab32e7b4ef6a4fc3650
--- /dev/null
+++ b/semantic/compare_variable_to_null.java
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        Test test = new Test();
+        if (test == null) {
+            return;
+        }
+    }
+}
diff --git a/semantic/cross_references.java b/semantic/cross_references.java
new file mode 100644
index 0000000000000000000000000000000000000000..9bda0f26e63a4a3ebb90dab928bf634c2e0aa81f
--- /dev/null
+++ b/semantic/cross_references.java
@@ -0,0 +1,15 @@
+class Test {
+    public static void main(String[] args) {
+       
+    }
+    public void test() {
+        Foo foo = new Foo();
+        foo.bar(this);
+    }
+}
+
+class Foo {
+    public void bar(Test test) {
+        test.test();
+    }
+}
diff --git a/semantic/field_access_not_a_statement.invalid.mj b/semantic/field_access_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..509513eb49837764ac69954ea034df99f1466a34
--- /dev/null
+++ b/semantic/field_access_not_a_statement.invalid.mj
@@ -0,0 +1,7 @@
+class FieldAccessNotAStatement {
+    public int test;
+    public static void main(String[] args) {
+        test;
+    }
+}
+
diff --git a/semantic/field_access_without_this.java b/semantic/field_access_without_this.java
new file mode 100644
index 0000000000000000000000000000000000000000..f92d7db898022f266a2ed52f113bf8741010f247
--- /dev/null
+++ b/semantic/field_access_without_this.java
@@ -0,0 +1,10 @@
+class FieldAccessWithoutThis {
+    public static void main(String[] args) {
+        new FieldAccessWithoutThis().test();
+    }
+
+    public int field;
+    public void test() {
+        field = 10;
+    }
+}
diff --git a/semantic/illegal_access_of_nonstatic_method.invalid.mj b/semantic/illegal_access_of_nonstatic_method.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..9c3494577d481b11ce0858ce0cbcb12cd9066887
--- /dev/null
+++ b/semantic/illegal_access_of_nonstatic_method.invalid.mj
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        foo();
+    }
+    public void foo() {
+
+    }
+}
diff --git a/semantic/illegal_this_in_static_method.invalid.mj b/semantic/illegal_this_in_static_method.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..87822edce21a2c278eccc478984e9c920195c208
--- /dev/null
+++ b/semantic/illegal_this_in_static_method.invalid.mj
@@ -0,0 +1,6 @@
+class IllegalThisInStaticMethod {
+    public static void main(String[] args) {
+        IllegalThisInStaticMethod a = this;
+    }
+}
+
diff --git a/semantic/integer_constant_not_a_statement.invalid.mj b/semantic/integer_constant_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..a1f7807ec63a8303f7acf31f181ec7d37f560c7f
--- /dev/null
+++ b/semantic/integer_constant_not_a_statement.invalid.mj
@@ -0,0 +1,6 @@
+class IntegerConstantNotAStatement {
+    public static void main(String[] args) {
+        1;
+    }
+}
+
diff --git a/semantic/integer_too_large.invalid.mj b/semantic/integer_too_large.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..202d748f3c2f204f3ddc5d664cf0cf593d098d02
--- /dev/null
+++ b/semantic/integer_too_large.invalid.mj
@@ -0,0 +1,6 @@
+class IntegerTooLarge {
+    public static void main(String[] args) {
+        int large = 100000000000;
+    }
+}
+
diff --git a/semantic/invalid_assign_to_main_parameter.invalid.java b/semantic/invalid_assign_to_main_parameter.invalid.java
new file mode 100644
index 0000000000000000000000000000000000000000..870019e32c560dba382a6e64acb6418f7aafc84f
--- /dev/null
+++ b/semantic/invalid_assign_to_main_parameter.invalid.java
@@ -0,0 +1,9 @@
+class InvalidAssignToMainParameter {
+    public static void main(String[] test) {
+        test = new String[5];
+    }
+}
+
+class String {
+}
+
diff --git a/semantic/invalid_int_as_if_condition.invalid.mj b/semantic/invalid_int_as_if_condition.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..f954afe4d291576c930283fe9bcfb0fec748b2a3
--- /dev/null
+++ b/semantic/invalid_int_as_if_condition.invalid.mj
@@ -0,0 +1,7 @@
+class Test {
+    public static void main(String[] args) {
+        if (1234) {
+            return;
+        }
+    }
+}
diff --git a/semantic/invalid_int_as_while_condition.invalid.mj b/semantic/invalid_int_as_while_condition.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..3062ab283ff5338217ddd5aebc2476f24d3f9664
--- /dev/null
+++ b/semantic/invalid_int_as_while_condition.invalid.mj
@@ -0,0 +1,7 @@
+class Test {
+    public static void main(String[] args) {
+        while (1234) {
+            return;
+        }
+    }
+}
diff --git a/semantic/invalid_null_integer.invalid.mj b/semantic/invalid_null_integer.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..b36ec3c61783f8311d162e3131060fe4e97f2042
--- /dev/null
+++ b/semantic/invalid_null_integer.invalid.mj
@@ -0,0 +1,6 @@
+class InvalidNullInteger {
+    public static void main(String[] args) {
+        int notNull = null;
+    }
+}
+
diff --git a/semantic/invalid_object_as_if_condition.invalid.mj b/semantic/invalid_object_as_if_condition.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..9f77a0800f76089757fe90de9af4b16c335b04f0
--- /dev/null
+++ b/semantic/invalid_object_as_if_condition.invalid.mj
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        Test test = new Test();
+        if (test) {
+            return;
+        }
+    }
+}
diff --git a/semantic/invalid_object_as_while_condition.invalid.mj b/semantic/invalid_object_as_while_condition.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..d2b82d65699968af8e7577e7bf321330100940fd
--- /dev/null
+++ b/semantic/invalid_object_as_while_condition.invalid.mj
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        Test test = new Test();
+        while (test) {
+            return;
+        }
+    }
+}
diff --git a/semantic/invalid_this_assignment.invalid.mj b/semantic/invalid_this_assignment.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..80312a23ce34d5352c10af308303790e89af0979
--- /dev/null
+++ b/semantic/invalid_this_assignment.invalid.mj
@@ -0,0 +1,9 @@
+class Test {
+    public static void main(String[] args) {
+        new Test().foo();
+    }
+
+    public void foo() {
+        this = new Test();
+    }
+}
diff --git a/semantic/logical_negation_of_int.invalid.mj b/semantic/logical_negation_of_int.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..76dccbd3dffdbb21ec9c2f2ee4fecea304a410f1
--- /dev/null
+++ b/semantic/logical_negation_of_int.invalid.mj
@@ -0,0 +1,5 @@
+class Test {
+    public static void main(String[] args) {
+        int test = !1;
+    }
+}
diff --git a/semantic/mathematical_negation_of_boolean.invalid.mj b/semantic/mathematical_negation_of_boolean.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..e839ccd88d4e2a40f55ee0de510057a6f5507f90
--- /dev/null
+++ b/semantic/mathematical_negation_of_boolean.invalid.mj
@@ -0,0 +1,5 @@
+class Test {
+    public static void main(String[] args) {
+        boolean test = -false;
+    }
+}
diff --git a/semantic/multidimensional_array_access.java b/semantic/multidimensional_array_access.java
new file mode 100644
index 0000000000000000000000000000000000000000..a8131ad63d22d26403d7dd8eb37a7f51c5fb1214
--- /dev/null
+++ b/semantic/multidimensional_array_access.java
@@ -0,0 +1,8 @@
+class Test {
+    public static void main(String[] args) {
+        Test[][][] a = new Test[1][][];
+        Test[][] b = a[0];
+        Test[] c = b[0];
+        Test d = c[0];
+    }
+}
diff --git a/semantic/multidimensional_array_creation.java b/semantic/multidimensional_array_creation.java
new file mode 100644
index 0000000000000000000000000000000000000000..e7ed70e12d4bf5bf80275bfeba60781aae4abfd6
--- /dev/null
+++ b/semantic/multidimensional_array_creation.java
@@ -0,0 +1,5 @@
+class Test {
+    public static void main(String[] args) {
+        Test[][] test = new Test[1][];
+    }
+}
diff --git a/semantic/not_a_statement_in_else.invalid.mj b/semantic/not_a_statement_in_else.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..eabcc377bfb80c6499c25c2ddb477c0ed5a07769
--- /dev/null
+++ b/semantic/not_a_statement_in_else.invalid.mj
@@ -0,0 +1,15 @@
+class NotAStatementInElse {
+
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+        if (true) {
+            bar();   
+        } else 1 && 1;
+    }
+
+    public void bar() {
+
+    }
+}
diff --git a/semantic/not_a_statement_in_if.invalid.mj b/semantic/not_a_statement_in_if.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..5a7accbc6ecc643e2ec825261ed1b1fa6e70ce68
--- /dev/null
+++ b/semantic/not_a_statement_in_if.invalid.mj
@@ -0,0 +1,9 @@
+class NotAStatementInIf {
+
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+        if (true) 1;
+    }
+}
diff --git a/semantic/not_a_statement_in_while.invalid.mj b/semantic/not_a_statement_in_while.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..b3b4cad30b42a54b6be15e55a815a7e1bfe9aacd
--- /dev/null
+++ b/semantic/not_a_statement_in_while.invalid.mj
@@ -0,0 +1,10 @@
+class NotAStatementInWhile {
+
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+        int a = 5;
+        while (true) a;
+    }
+}
diff --git a/semantic/not_a_statement_nested_function_call.invalid.mj b/semantic/not_a_statement_nested_function_call.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..8d93a40de97b60aa2923002451d78b1552268d05
--- /dev/null
+++ b/semantic/not_a_statement_nested_function_call.invalid.mj
@@ -0,0 +1,13 @@
+class NotAStatementNestedFunctionCall {
+
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+        true && bar();
+    }
+
+    public void bar() {
+
+    }
+}
diff --git a/semantic/null_constant_not_a_statement.invalid.mj b/semantic/null_constant_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..135205ff153de2b2c8445bd1dfd5e1f951329f7f
--- /dev/null
+++ b/semantic/null_constant_not_a_statement.invalid.mj
@@ -0,0 +1,6 @@
+class NullConstantNotAStatement {
+    public static void main(String[] args) {
+        null;
+    }
+}
+
diff --git a/semantic/redeclaration_main_parameter.invalid.mj b/semantic/redeclaration_main_parameter.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..db5d138b5e6c9b7688f58249a56676f8a53d95e4
--- /dev/null
+++ b/semantic/redeclaration_main_parameter.invalid.mj
@@ -0,0 +1,5 @@
+class RedefineMainParameter {
+    public static void main(String[] args) {
+        int args = 0;
+    }
+}
diff --git a/semantic/too_many_arguments.invalid.mj b/semantic/too_many_arguments.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..53c59dd9fada82f4a97bb50582b8ff260af8a2f8
--- /dev/null
+++ b/semantic/too_many_arguments.invalid.mj
@@ -0,0 +1,12 @@
+class TooManyArguments {
+    public static void main(String[] args) {
+    }
+
+    public void test() {
+        foo (1,2,3);
+    }
+
+    public void foo(int a) {
+
+    }
+}
diff --git a/semantic/undefined_class.invalid.mj b/semantic/undefined_class.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..5d1a6934ae2a7c17a743a00144d3e8b793fc79f8
--- /dev/null
+++ b/semantic/undefined_class.invalid.mj
@@ -0,0 +1,5 @@
+class UndefinedClass {
+    public Undefined test;
+    public static void main(String[] args) {
+    }
+}
diff --git a/semantic/undefined_field.invalid.mj b/semantic/undefined_field.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..7a1efe93ee23aafe349fced0a7d0b12b96cea314
--- /dev/null
+++ b/semantic/undefined_field.invalid.mj
@@ -0,0 +1,5 @@
+class UndefinedField {
+    public static void main(String[] args) {
+        new UndefinedField().undefined = 5;
+    }
+}
diff --git a/semantic/undefined_method.invalid.mj b/semantic/undefined_method.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..091465c1cd56dbb1b88c8df9b016e46f72f04357
--- /dev/null
+++ b/semantic/undefined_method.invalid.mj
@@ -0,0 +1,8 @@
+class UndefinedMethod {
+    public static void main(String[] args) {
+    }
+
+    public void foo() {
+       undefined();
+    }
+}
diff --git a/semantic/undefined_method_on_class.invalid.mj b/semantic/undefined_method_on_class.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..8bf969e74ce365a94f0da460f8534127b41e7aed
--- /dev/null
+++ b/semantic/undefined_method_on_class.invalid.mj
@@ -0,0 +1,5 @@
+class UndefinedMethodOnClass {
+    public static void main(String[] args) {
+        new UndefinedMethodOnClass().undefined();
+    }
+}
diff --git a/semantic/unexpected_return_value.invalid.mj b/semantic/unexpected_return_value.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..9b9f2dc92c0ed67c9c14e4013e13cdae636ef256
--- /dev/null
+++ b/semantic/unexpected_return_value.invalid.mj
@@ -0,0 +1,8 @@
+class UnexpectedReturnValue {
+    public static void main(String[] args) {
+    }
+
+    public void test() {
+        return 1;
+    }
+}
diff --git a/semantic/variable_access_not_a_statement.invalid.mj b/semantic/variable_access_not_a_statement.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..87ac60a014e6ab1118679b3e9fc2db2562b5ca9f
--- /dev/null
+++ b/semantic/variable_access_not_a_statement.invalid.mj
@@ -0,0 +1,7 @@
+class VariableAccessNotAStatement {
+    public static void main(String[] args) {
+        int test = 5;
+        test;
+    }
+}
+
diff --git a/semantic/variable_can_be_uninitialized.mj b/semantic/variable_can_be_uninitialized.mj
new file mode 100644
index 0000000000000000000000000000000000000000..db16fa66bbdfc496d8a2968ed0b695b301a0b5c2
--- /dev/null
+++ b/semantic/variable_can_be_uninitialized.mj
@@ -0,0 +1,12 @@
+class VariableCanBeUninitialized {
+    public static void main(String[] args) {
+        Foo foo;
+        foo.bar();
+    }
+}
+
+class Foo {
+    public void bar() {
+
+    }
+}
diff --git a/semantic/void_array.invalid.mj b/semantic/void_array.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..b57236b3a8c5d9ee617d2e07deb9462f19f991b2
--- /dev/null
+++ b/semantic/void_array.invalid.mj
@@ -0,0 +1,5 @@
+class Test {
+    public static void main(String[] args) {
+        void[] test;
+    }
+}
diff --git a/semantic/void_cannot_be_array_type.invalid.mj b/semantic/void_cannot_be_array_type.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..a8e5ac6a6ed84d2772b469938f4760e423618563
--- /dev/null
+++ b/semantic/void_cannot_be_array_type.invalid.mj
@@ -0,0 +1,6 @@
+class VoidCannotBeArrayType {
+    public static void main(String[] args) {
+        void[] invalid = new void[5];
+    }
+}
+
diff --git a/semantic/wrong_argument_type.invalid.mj b/semantic/wrong_argument_type.invalid.mj
new file mode 100644
index 0000000000000000000000000000000000000000..269b29ff22a48031cbbdd1df6dcfa8fe7ca818a2
--- /dev/null
+++ b/semantic/wrong_argument_type.invalid.mj
@@ -0,0 +1,12 @@
+class WrongArgumentType {
+    public static void main(String[] args) {
+    }
+
+    public void test() {
+        foo (1);
+    }
+
+    public void foo(boolean a) {
+
+    }
+}