Itemp Java Quiz 3

In Java, "friend" is not a reserved word. Reserved words are predefined keywords that have special meanings and cannot be used as identifiers (such as variable names or class names) in the program. "import", "finally", and "goto" are all examples of reserved words in Java.

The value assigned to the variable answer after executing this code will be 51. This is because the code first assigns the value 50 to the variable answer, and then adds 1 to it using the += operator. This results in answer being incremented by 1, making it equal to 51.

Variable names in Java cannot start with a number. They must begin with a letter, an underscore, or a dollar sign. Therefore, the variable name "2ndletter" will be rejected by the Java compiler.

A Java double primitive value uses 64 bits. A double is a data type in Java that represents a decimal number with double precision. It is stored using 64 bits, which allows for a wide range of values and a high level of precision. This allows for accurate calculations and storage of decimal numbers in Java programs.

The correct answer is "boolean flag = true;". In Java, boolean primitive variables can only be assigned the values "true" or "false" in lowercase letters. The other options are incorrect because they either use the wrong case for the boolean values or use the Boolean wrapper class instead of the boolean primitive type.

The variable "seconds" will have a value of 86400000 after the execution of line 3. This is because the variable "days" is multiplied by 24 (hours in a day), then by 60 (minutes in an hour), and finally by 60 (seconds in a minute), resulting in the total number of seconds in 1000 days.

The int primitive type can correctly represent a value of 65000. Integers are whole numbers without any decimal points, and the int type can store values up to 2,147,483,647. Since 65000 falls within this range, it can be accurately represented using the int data type.

The float data type in Java uses the same number of bits as the int data type, which is 32 bits. Both int and float can store 32 bits of information, although they represent different types of values. Int is used for storing whole numbers, while float is used for storing decimal numbers with a wider range and less precision.

The code will give an error because the result of the multiplication operation is an int, and it cannot be directly assigned to a byte variable.

A byte is a data type in computer programming that can store 8 bits of information. In binary, the leftmost bit is used to represent the sign of the number, with 0 indicating a positive number and 1 indicating a negative number. Therefore, in the range of values that a byte can store, the leftmost bit can be either 0 or 1, resulting in a range of -128 to 127.