Suppose a programmer must represent the operating modes of a robotic arm within a program. The robotic arm can be ready for commands, sleeping, or actively executing a command sequence. Which of the following code fragments best represents the robotic arm's operating modes in Java? a. final int READY =0; final int SUSPENDED =1 final int ACTIVE =2; int currentstatus = READY; b. enum Mode \{ READY, SUSPENDED, ACTIVE \} Mode currentstatus = Mode. READY ; c. String currentstatus = "READY"; // Also can be "SUSPENDED" or "ACTIVE" Java permits assigning a char value to an int variable. Select one: True False What reserved word makes a variable constant; that is, its value cannot be changed after its initialization. Answer: What is the type of the expression 45 in the following Java code fragment? x=45; a. short b. char c. double d. float e. byte f. int g. long What two-character sequence represents the backspace character in a string literal or character literal? Do not use any spaces or quote marks. Assignment of a double expression to a float variable involves what process? a. narrowing b. widening What two-character sequence represents the tab character in a string literal or character literal? Do not use any spaces or quote marks. Given the following declaration: var scan = new java.util.Scanner (System.in); What method available to the scan object reads a float value from the keyboard? Do not use any spaces or parentheses in your answer. Answe What two-character sequence represents the backslash (\) character in a string literal or character literal? Do not use any spaces or quote marks