if, if-else, if-else-if ladder
Conditional statements in Java programming allow you to control program execution based on some particular user generated condition. These conditional statements in Java help you to control and handle multiple conditions based on if, if-else, if-else-if ladder conditional statements.
So, let’s learn more about if, if-else, if-else-if ladder conditional statements in Java programming.
if Statement in Java.
If statement is the most used and easy implemented programming conditional statement in Java programming. If statement in Java allows you to execute a block of program source code only if the current if statement condition is completely true.
If Statement syntax in Java.
if (condition) {
// it executes if statement Block of code when the if the condition is true
}
public class Main
{
public static void main(String[] args)
{
int value = 2;
if (value > 1)
{
System.out.println(“\n The value is greater than 1.”);
}
}
}
If statement explanation in Java programming.
Here in if condition the value > 2 condition is true because the value 2 is greater than 1. So, here the code inside the if code block is automatically executed and the output message is “value is greater than 2”.
if-else statement in Java.
The if-else statement in Java and other programming languages allows the Java programmer to execute one block of program code if the if condition is true, and execute another block of else code if the condition is false in the current program. That is, at a time either the if or else statement must print and execute a message or result.
if-else statement Java syntax.
if (condition) {
// it executes if Block of code when if the condition is true
} else {
// it executes Block of else code when if condition is false
}
if-else statement Java example.
public class Main
{
public static void main(String[] args) {
int value = 1;
if (value > 2)
{
System.out.println(“\n The value is greater than 2.”);
}
else
{
System.out.println(“\n The value is not greater than 2.”);
}
}
}
if-else statement Java explanation.
In the above program if condition value > 1 is false, because here 1 is not a greater value than 2. So, here the code in the else source block is executed, and the output is printed “value is not greater than 2”.
if-else-if ladder statement in Java.
if-else-if Ladder statement is used when you need to check multiple conditional statements in an existing Java program. It allows you to check multiple conditions in an order or sequence where only one block of code will be executed based on the first true condition.
if-else-if ladder statement Java syntax.
if (condition1) {
// it executes Block of code when if condition1 is true
} else if (condition2) {
// it executes Block of code when if condition2 is true
} else if (condition3) {
// it executes Block of code when if condition3 is true
} else {
// it executes Block of code when if no condition is true
}
if-else-if ladder statement Java example.
public class Main
{
public static void main(String[] args) {
int value = 1;
if (value > 2) {
System.out.println(“\n value is greater than 2.”);
} else if (value > 1) {
System.out.println(“\n The value is greater than 1 but less than or equal to 2.”);
} else if (value > 4) {
System.out.println(“\n The value is greater than 4 but less than or equal to 1.”);
} else {
System.out.println(“\n The value is 4 or less.”);
}
}
}
if-else-if ladder statement Java explanation.
In the above program, the value of value is 1. Here the if condition value > 2 is false, so the program moves to the next condition, value > 1. Since 2 > 1 is true, it executes the corresponding block of code, and prints the output message “value is greater than 1 but less than or equal to 2”.
Flow of execution in if-else-if ladder in Java program.
Here the Java If-Else-If ladder analyses all the programming conditions given in the program from top to bottom.
If any condition is true, then the related code block of the program code is executed, and all other condition statements are ignored.
If none of the If Else conditions is true, then the program code executes if the else block is present.
Multiple if Statements (Without else or else-if) in Java.
Sometimes you can use multiple individuals if condition statements in a Java program where you can test or analyse more than one if conditional statement without depending on other else statement code blocks.
Multiple if Statements Example.
public class Main
{
public static void main(String[] args) {
int value = 1;
if (value > 0)
{
System.out.println(“\n The value is greater than 0.”);
}
if (value < 2)
{
System.out.println(“\n The value is less than 2.”);
}
if (value == 1)
{
System.out.println(“\n The value is equal to 1.”);
}
}
}
Multiple if Statements Explanation.
In the above program, each if condition is individual from other conditions. Since the value is 1, all three conditions are true, so all three blocks of code are executed, and the output will be.
“The value is greater than 0.”
“The value is smaller than 2.”
“The value is equal to 1.”
Summary of Conditional Statements
| Statement | Description | Example |
| if | It Executes a block of code when the given if condition is true. | if (p > 1) { … } |
| if-else | It Executes one block if the condition when if is true, and another if it is false. | if (p > 2) { … } else { … } |
| if-else-if Ladder | It Checks multiple if else conditions in sequence. And only Executes the block for the first true condition in all block. | if (p > 3) { … } else if (p > 4) { … } else { … } |
| Multiple if Statements | It uses to Checks multiple independent if block conditions, where each if statement condition executed separately. | if (p > 7) { … } if (q < 9) { … } |
If, If-Else, If-Else-If Ladder, Conditional Statements Conclusion in Java Programming.
- The If statement in Java programming allows Java programmers to execute a block of program code based on a single condition.
- If-Else condition statements in Java programs allow Java programmers to manage and control two condition situations. In this, when one condition is true, and the other condition is false.
- The If-Else-If ladder statement in Java programming enables you to check multiple If-Else-If ladder conditions in a sequence order. Which allows the first block that analyses the true result to be executed in the current program.
