Question

Identify, from among the following, the incorrect descriptions related to Java :

(a) Java Virtual Machine translates byte code into its own system's machine language and runs the resulting machine code
(b) The arithmetic operations *, /, %, + and - have the same level of precedence
(c) Comments do not cause any action to be performed during the program execution
(d) All variables must be given a type when they are declared
(e) Java variable names are case-sensitive.

Answer 1

The incorrect statement about Java is that the arithmetic operations '*', '/', '%', '+' and '-' have the same level of precedence, as '*', '/', and '%' actually have higher precedence than '+' and '-'.

Step-by-step explanation:

Among the statements related to Java, the incorrect description is (b) The arithmetic operations *, /, %, + and - have the same level of precedence. In Java, the arithmetic operators do not all have the same level of precedence. The operators * (multiplication), / (division), and % (modulus) have higher precedence than the operators + (addition) and - (subtraction). Therefore, multiplication, division, and modulus operations will be performed before addition and subtraction in the absence of parentheses to alter the order.

The rest of the descriptions given are accurate:

• (a) The Java Virtual Machine (JVM) does indeed translate byte code into its own system's machine language and then runs the resulting machine code.
• (c) Comments in Java are ignored by the JVM, meaning they do not cause any actions to be performed during program execution.
• (d) All variables in Java must indeed be given a type when they are declared, which is part of Java's statically-typed nature.
• (e) Variable names in Java are case-sensitive, which means that variables named 'Data' and 'data' would be considered distinct.