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Java If Else

Java if...else statements are used to perform different actions based on different conditions. They help control the flow of a program and allow decision making.

Java If Statement

The if statement is used to check a condition. If the condition is true, the code inside the block will be executed.

Example
public class Main {
  public static void main(String[] args) {
int x = 10;

if (x > 5) {
  System.out.println("x is greater than 5");
}
  }
}
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Java If Else Statement

The if...else statement executes one block of code if the condition is true, and another block if it is false.

Example
public class Main {
  public static void main(String[] args) {
int x = 3;

if (x > 5) {
  System.out.println("x is greater than 5");
} else {
  System.out.println("x is less than or equal to 5");
}
  }
}
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Java Else If Statement

Use else if to check multiple conditions.

Example
public class Main {
  public static void main(String[] args) {
int x = 5;

if (x > 5) {
  System.out.println("Greater than 5");
} else if (x == 5) {
  System.out.println("Equal to 5");
} else {
  System.out.println("Less than 5");
}
  }
}
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Nested If Statements

You can use an if statement inside another if statement.

Example
public class Main {
  public static void main(String[] args) {
int x = 10;

if (x > 5) {
  if (x < 15) {
    System.out.println("x is between 5 and 15");
  }
}
  }
}
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Short Hand If (Ternary Operator)

Java provides a short way to write simple if...else statements using the ternary operator.

Example
public class Main {
  public static void main(String[] args) {
int x = 10;

String result = (x > 5) ? "Greater" : "Smaller";
System.out.println(result);
  }
}
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Why If Else is Important