Java If-else Statement
The Java if statement is used to test the condition. It checks boolean condition: true or false. There are various types of if statement in java.
- if statement
- if-else statement
- nested if statement
- if-else-if ladder
Java IF Statement
The Java if statement tests the condition. It executes the if block if condition is true.
Syntax:
if(condition){
//code to be executed
}
Example:
public class IfExample {
public static void main(String[] args) {
int age=20;
if(age>18){
System.out.print("Age is greater than 18");
}
}
}
Output:
Age is greater than 18
Java IF-else Statement
The Java if-else statement also tests the condition. It executes the if block if condition is true otherwise else block is executed.
Syntax:
if(condition){
//code if condition is true
}else{
//code if condition is false
}
Example:
public class IfElseExample {
public static void main(String[] args) {
int number=13;
if(number%2==0){
System.out.println("even number");
}else{
System.out.println("odd number");
}
}
}
Output:
odd number
Java IF-else-if ladder Statement
The if-else-if ladder statement executes one condition from multiple statements.
Syntax:
if(condition1){
//code to be executed if condition1 is true
}else if(condition2){
//code to be executed if condition2 is true
}
else if(condition3){
//code to be executed if condition3 is true
}
...
else{
//code to be executed if all the conditions are false
}
Example:
public class IfElseIfExample {
public static void main(String[] args) {
int marks=65;
if(marks<50){
System.out.println("fail");
}
else if(marks>=50 && marks<60){
System.out.println("D grade");
}
else if(marks>=60 && marks<70){
System.out.println("C grade");
}
else if(marks>=70 && marks<80){
System.out.println("B grade");
}
else if(marks>=80 && marks<90){
System.out.println("A grade");
}else if(marks>=90 && marks<100){
System.out.println("A+ grade");
}else{
System.out.println("Invalid!");
}
}
}
Output:
C grade
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