Question

Which of the following correctly declares a new variable which can be used to point to an object of the String class type?

1.str String;
2.String str;
3.str = String;
4.String "str";
5.new String;

Answer 1

The correct way to declare a String variable is with the syntax 'String str;'. This statement declares a variable named 'str' that can hold a reference to a String object. Other options presented are incorrect or incomplete.

Step-by-step explanation:

The question is asking how to correctly declare a variable that can reference an object of the String class in Java. Among the options provided, the correct way to declare a String variable is option 2, String str;. This statement creates a variable named str that can point to a String object. The syntax is composed of two parts: the class name (String) which indicates the type of the object the variable can refer to and the variable name (str) which is the name you will use to refer to the String object in your code.

The other options provided are either incorrect syntax or incomplete statements. Option 1 has the class name and variable name reversed, option 3 incorrectly attempts to assign the class name to a variable, option 4 wrongly uses quotation marks which are not used in declaring variables in Java, and option 5 is missing the variable name and only includes the keyword used to create a new String object.