Question

explain various decision making in java​

Answer 1

Decision Making in Java (if, if-else, switch, break, continue, jump)

Decision Making in programming is similar to decision making in real life. In programming also we face some situations where we want a certain block of code to be executed when some condition is fulfilled.

A programming language uses control statements to control the flow of execution of program based on certain conditions. These are used to cause the flow of execution to advance and branch based on changes to the state of a program.

Java’s Selection statements:if

if-else

nested-if

if-else-if

switch-case

jump – break, continue, return

These statements allow you to control the flow of your program’s execution based upon conditions known only during run time.

if: if statement is the most simple decision making statement. It is used to decide whether a certain statement or block of statements will be executed or not i.e if a certain condition is true then a block of statement is executed otherwise not.

Syntax:

if(condition)

{

// Statements to execute if

// condition is true

}

Here, condition after evaluation will be either true or false. if statement accepts boolean values – if the value is true then it will execute the block of statements under it.

If we do not provide the curly braces ‘{‘ and ‘}’ after if( condition ) then by default if statement will consider the immediate one statement to be inside its block. For example,