Use language enum instead of hardcoded 'java'

Author: mahlashrifi

sebs/benchmark.py

@@ -261,7 +261,7 @@ def copy_code(self, output_dir):
                 shutil.copy2(os.path.join(path, f), output_dir)
 
         # copy src folder of java (java benchmarks are maven project and need directories)
-        if self.language_name == "java":
+        if self.language_name == Language.JAVA:
            output_src_dir = os.path.join(output_dir, "src")
 
            if os.path.exists(output_src_dir):
@@ -278,7 +278,7 @@ def copy_code(self, output_dir):
     #This is for making jar file and add it to docker directory
     def add_java_output(self, code_dir):
 
-        if self.language_name == "java":
+        if self.language_name == Language.JAVA:
 
             # Step 1: Move Main.java o src directory
             src_dir = os.path.join(code_dir, "src", "main", "java")