Types of conditional statements in java with example

Types of conditional statements in java with example

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In Java, there are three main types of conditional statements: If-else statement, Switch statement, and Ternary operator. Each type has its own use case and syntax. Let's dive into the details!

1. If-Else Statement

An If-else statement is used to execute a block of code if a certain condition is met. It consists of an if clause followed by an else clause.

Example:

int age = 25;
if (age > 18) {
System.out.println("You are an adult.");
} else {
System.out.println("You are a minor.");
}

In this example, if the value of age is greater than 18, it will print "You are an adult." Otherwise, it will print "You are a minor."

2. Switch Statement

A Switch statement is used to execute different blocks of code based on the value of a variable or expression.

Example:

int day = 3;
switch (day) {
case 1:
System.out.println("Monday");
break;
case 2:
System.out.println("Tuesday");
break;
case 3:
System.out.println("Wednesday");
break;
default:
System.out.println("Invalid day");
break;
}

In this example, based on the value of day, it will print "Monday", "Tuesday", or "Wednesday" accordingly. If the value is not one of these three days, it will print "Invalid day".

3. Ternary Operator

A Ternary operator (also known as a conditional expression) is used to shorten an if-else statement into a single line of code.

Example:

int score = 85;
String grade = score > 80 ? "A" : "B";
System.out.println(grade);

In this example, the ternary operator checks if score is greater than 80. If true, it assigns the value "A" to grade. Otherwise, it assigns the value "B". Then it prints the value of grade.

These three types of conditional statements are essential in Java programming. By using them correctly, you can make your code more concise, readable, and efficient.

I hope this explanation helps! Let me know if you have any further questions.

What is a conditional statement in Java with an example?

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A conditional statement in Java, also known as an if-else statement or a decision-making statement, is used to make decisions based on conditions or criteria. It allows the program to execute different blocks of code depending on whether a condition is true or false.

The basic syntax for a conditional statement in Java is:

if (condition) {
// code to be executed if condition is true
} else {
// code to be executed if condition is false
}

Here, condition is a boolean expression that evaluates to either true or false. If the condition is true, the code inside the if block will be executed. Otherwise, the code inside the else block will be executed.

Let's consider an example:

int age = 25;
if (age >= 18) {
System.out.println("You are eligible to vote.");
} else {
System.out.println("You are not yet eligible to vote.");
}

In this example, we have a variable age with value 25. We then use an if-else statement to check whether the age is greater than or equal to 18. If it is, we print "You are eligible to vote." Otherwise, we print "You are not yet eligible to vote."

When we run this program, since the condition age >= 18 is true (25 is indeed greater than or equal to 18), the output will be:

You are eligible to vote.

Conditional statements can also have multiple conditions using the else if statement. For example:

int score = 80;
if (score >= 90) {
System.out.println("A");
} else if (score >= 80) {
System.out.println("B");
} else {
System.out.println("F");
}

In this case, we have a variable score with value 80. We use an if-else statement to check the score and print out a grade accordingly. Since 80 is greater than or equal to 80 but less than 90, the output will be:

B

Conditional statements are a fundamental part of programming in Java (and many other languages). They allow you to make decisions based on conditions and execute different blocks of code depending on those conditions.

Hope this helps! Let me know if you have any further questions.