What is if statement in Java example?
The Java 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. Control falls into the if block.
How do you declare an if statement in Java?
Java has the following conditional statements:
- Use if to specify a block of code to be executed, if a specified condition is true.
- Use else to specify a block of code to be executed, if the same condition is false.
- Use else if to specify a new condition to test, if the first condition is false.
How do you write an if statement with multiple conditions in Java?
When using multiple conditions, we use the logical AND && and logical OR || operators. Note: Logical AND && returns true if both statements are true. Logical OR || returns true if any one of the statements is true.
What does == mean in Java?
equality operator
The equality operator or “==” compares two objects based on memory reference. so “==” operator will return true only if two object reference it is comparing represent exactly same object otherwise “==” will return false.
What is == and === in Java?
1) When we compare two variables of different type e.g. a boolean with a string or a number with String using == operator, it automatically converts one type into another and return value based upon content equality, while === operator is strict equality operator in Java, and only return true if both variable of same …
What are the different forms of if statement with example?
There are three forms of IF statements: IF-THEN , IF-THEN-ELSE , and IF-THEN-ELSIF . The simplest form of IF statement associates a Boolean expression with a sequence of statements enclosed by the keywords THEN and END IF . The sequence of statements is executed only if the expression returns TRUE .
Why if statement is used?
In Excel, the IF statement is used in evaluating a logical or mathematical expression and getting the desired output based on the specified criteria. The IF statement works by checking the expression to see whether a condition is met and returns a value based on the output obtained.
What is == in Java example?
== operator is a type of Relational Operator in Java used to check for relations of equality. It returns a boolean result after the comparison and is extensively used in looping statements and conditional if-else statements.
How do you use if statements in Java?
– Control falls into the if block. – The flow jumps to Condition. – Condition is tested. If Condition yields true, goto Step 4. If Condition yields false, goto Step 5. – The if-block or the body inside the if is executed. – Flow steps out of the if block.
How to replace many if statements in Java?
Extract each branch into separate strategy classes with a common interface
What is an else if statement in Java?
Syntax. If the boolean expression evaluates to true,then the if block of code will be executed,otherwise else block of code will be executed.
How to end if statement in Java?
IF-THEN-ELSE-END IF . The most general form of the IF-THEN-ELSE-END IF statement is the following: IF (logical-expression) THEN statements-1 ELSE statements-2 END IF where statements-1 and statements-2 are sequences of executable statements, and logical-expression is a logical expression. The execution of this IF-THEN-ELSE-END IF statement goes as follows: