16.Conditional Statements in Java (If , If-else , else- if )

                                                CONDITIONAL STATEMENTS

A conditional statement consists of a condition and a task. When the condition is true, the application performs the task. The condition portion of a conditional statement is also called an expression.

There are four types of conditional statements in java : 

• If Condition.
• If else condition.
• If else If condition.
• Nested If condition.

If condition : The Java if statement tests the condition. It executes the if block if condition is true.

1. if(condition){  
2. //code to be executed  
3. }  

If else Condition: 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.

1. if(condition){  
2. //code if condition is true  
3. }else{  
4. //code if condition is false  
5. }  

 If Else If  Conditions: The if-else-if ladder statement executes one condition from multiple statements.

1. if(condition1){  
2. //code to be executed if condition1 is true  
3. }else if(condition2){  
4. //code to be executed if condition2 is true  
5. }  
6. else if(condition3){  
7. //code to be executed if condition3 is true  
8. }  
9. ...  
10. else{  
11. //code to be executed if all the conditions are false  
12. }  

Nested If :  The nested if statement represents the if block within another if block. Here, the inner if block condition executes only when outer if block condition is true.

1. if(condition){    
2.      //code to be executed    
3.           if(condition){  
4.              //code to be executed    
5.     }    
6. }