4. What is an identifier. 5. Indicate which of the following are valid identifiers. For those that are not a valid identifier, explain why they are not valid a. ab!2x b. z974@212 c._xfb_s32 d. 95xyz_ e. ABC df f. al-xc99 g. 679[a] h. B!lly i. i9h0n3_6- j. a Ssample

4. What is an identifier. 5. Indicate which of the following are valid identifiers. For those that are not a valid identifier, explain why they are not valid a. ab!2x b. z974@212 c._xfb_s32 d. 95xyz_ e. ABC df f. al-xc99 g. 679[a] h. B!lly i. i9h0n3_6- j. a Ssample

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter2: Using Data

Section: Chapter Questions

Problem 6RQ

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Concept explainers

Control structures

Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.

Switch Statement

The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.

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Can someone please help me

4. What is an identifier.
5. Indicate which of the following are valid identifiers. For those that are not a
valid identifier, explain why they are not valid
a. ab!2x b. z974@212 c. xfb s32 d. 95xyz e. ABC df
f. al-xc99 g. 679 [a]
h. B!lly i. i9h0n3 6
j. a Ssample

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