Question

What is the error in the following program? double a=12.5;
int b=a;
System.out.println (b);​

Answer 1

$\textsf{\large{\underline{Solution}:}}$

Given Co‎de:

double a = 12.5;

int b = a;

System.out.println(b);

Corrected Co‎de:

double a = 12.5;

int b = (int)a;

System.out.println(b);

Output: 12

$\textsf{\large{\underline{Explanation}:}}$

• Here, we are assigning a value of larger data type to a smaller data type (i.e. double to int). So, error occurs while executing the program.
• We can use explicit type casting feature to remove the error.

$\textsf{\large{\underline{Learn More}:}}$

Hierarchy of Data Types:

$\begin{array}{|c}\rm byte\\ \rm char\\ \rm short\\ \rm int\\ \rm long\\ \rm float\\ \rm double\end{array}\downarrow$

The hierarchy indicates the increasing order of data types. When two data of different types are combined, the result is converted to highest data type.

Example: Char + Int = Int.

Answer 2

Explanation:

Answer is

double a = 12.5;

int b =(int) a ;

System.out.println(b);

OUTPUT : 12