# If else-2

## 1. Conditional statements without braces
> If we have only 1 statement to execute for **if** or **else if** or **else** then we can write it without braces.

Code1 :

int time = 22;
if (time < 10) {
    System.out.println("Good morning");
}
 else {
     System.out.println("Good day");
}

Output :

Good day

Explanation :

time < 10 is flase hence else block code is executed.

>

> This same code can be written without braces :

Code2 :

int time = 22;
if (time < 10) 
    System.out.println("Good morning"); 
else 
    System.out.println("Good day");

Output :

Good day

Explanation :

time < 10 is false hence else block code is executed.

## 2. Scope of a variable

> The scope/life of a variable is restricted to the block **{}** where it is created.

> We can't access a variable outside it's block i.e **{}**.

Code1 :

public static void main(String[] args) {
    int x = 10;
    {
        int y = 20;
        System.out.println(x + " " + y);
    }
    {

        System.out.println(x + " " + y); // y is out of scope here
    }
    System.out.println(x + " " + y);
}

Output :

Error : cannot find symbol
        symbol:   variable y

Explanation :

Variable y is out of scope as it is created inside different block.

Code2 :

1. public static void main(String[] args) {
2.    int x = 10, y = 20;
3.    {
4.        System.out.println(x + " " + y); //10 20
5.    }
6.    {
7.        x = 15; // x = 15, y = 20
8.        System.out.println(x + " " + y);// 15 20
9.    }
10.    System.out.println(x + " " + y); // 15 20
11. }

Output :

10 20
15 20
15 20

Explanation :

Here both x and y are created in line 1 block so they can be accessed here i.e till line 11.