Study tips 1Z0-803

Which code fragment when inserted at line ‘// insert code fragment here’, enables the code to successfully change arra elements to uppercase?

Which code fragment, when inserted at line //insert code here, enables the code to print COJ?

What is the result?

What is the result?

Which two modifications, made independently, enable the code to compile and run?

What is the result?

What is the result?

What is the result?

What is the result?

Which code fragment can be inserted at line //insert code here to enable the code to compile?