diff --git a/.idea/JavaClassFileParser.iml b/.idea/JavaClassFileParser.iml
index 8182136..faa5fb5 100644
--- a/.idea/JavaClassFileParser.iml
+++ b/.idea/JavaClassFileParser.iml
@@ -4,7 +4,7 @@
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="jdk" jdkName="Pipenv (JavaClassFileParser)" jdkType="Python SDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="PackageRequirementsSettings">
diff --git a/.idea/misc.xml b/.idea/misc.xml
index c236a7a..e8081c9 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="Black">
+    <option name="sdkName" value="Pipenv (PJVM)" />
+  </component>
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Pipenv (JavaClassFileParser)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Pipenv (PJVM)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/pjvm/opcodes.py b/pjvm/opcodes.py
index 4158a11..38e0c0b 100644
--- a/pjvm/opcodes.py
+++ b/pjvm/opcodes.py
@@ -85,13 +85,30 @@ def op_ldc(vm: "PJVirtualMachine", opcode: int, frame: Frame):
     frame.stack.append(resulting_value)
 
 
+@Opcode(0xb8, size=3, no_ret=True)
+def op_invokestatic(vm: "PJVirtualMachine", opcode: int, frame: Frame):
+    index = frame.get_short(frame.ip + 1)
+    class_name, method_name, descriptor = frame.clazz.cp_get_methodref(index)
+    LOGGER.info(f"Calling static {class_name} -> {method_name} {descriptor}")
+    args_types = utils.get_argument_count_types_descriptor(descriptor)
+    # todo type check
+    args = []
+    for _ in args_types:
+        args.append(frame.stack.pop())
+
+    result = vm.execute_static_method(class_name, method_name, args)
+
+    if descriptor[-1] != 'V':
+        frame.stack.append(result)
+
+
 @Opcode(0xb6, size=3, no_ret=True)
 def op_invokevirtual(vm: "PJVirtualMachine", opcode: int, frame: Frame):
     index = frame.get_short(frame.ip + 1)
     result: JObj
 
     class_name, method_name, descriptor = frame.clazz.cp_get_methodref(index)
-    LOGGER.info(f"Calling {class_name} -> {method_name} {descriptor}")
+    LOGGER.info(f"Calling virtual {class_name} -> {method_name} {descriptor}")
     args_types = utils.get_argument_count_types_descriptor(descriptor)
     # todo type check
     args = []
diff --git a/pjvm/vm.py b/pjvm/vm.py
index 14f3b35..589804f 100644
--- a/pjvm/vm.py
+++ b/pjvm/vm.py
@@ -49,7 +49,7 @@ class PJVirtualMachine:
         if main_class not in self.classes:
             raise PJVMException("main_class not found!")
 
-        self.execute_static_method(main_class, 'Main', [j_args])
+        self.execute_static_method(main_class, 'main', [j_args])
 
     def execute_static_method(self, class_name: str, method_name: str, args: List[JObj]):
         clazz = self.classes[class_name]
diff --git a/testclass/AdvancedTest.java b/testclass/AdvancedTest.java
index 1a33ccd..b3977d1 100644
--- a/testclass/AdvancedTest.java
+++ b/testclass/AdvancedTest.java
@@ -1,7 +1,12 @@
 package testclass;
 
 public class AdvancedTest {
-    public static void Main(String[] args) throws Exception{
+    private static void method() {
+        System.out.println("Hello");
+    }
+
+    public static void main(String[] args) throws Exception{
+        method();
         char c = (char) System.in.read();
         if (c == 'a') {
             System.out.println("Is a");
diff --git a/testclass/Test.java b/testclass/Test.java
index 8a818cc..8d2292b 100644
--- a/testclass/Test.java
+++ b/testclass/Test.java
@@ -3,7 +3,7 @@ package testclass;
 public class Test {
     String testfield;
     public static int otherField;
-	public static void Main(String[] args) {
+	public static void main(String[] args) {
 		System.out.println("Hello World!");
 	}
 }