Type Casting in Java - आसान अध्ययन смотреть онлайн

Type Casting in Java - आसान अध्ययन
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******************** Video Details *********************************
After watching this video, You will learn……
What is type casting / promotion in java?
Valid type casting in java?
What is implicit type casting in java?
What is explicit type casting in java?
Problem of type casting and how to get solution ?
Example and program.
Practical demo on the above topic.

What is type casting in java?
Type casting refers to changing an variable of one data type into another.
Possible type conversion / promotion in java :-
Implicit & Explicit Type Conversion in java
Solid arrow line in above diagram shows valid conversion in java without loss of information.
Dotted line in above diagram shows invalid conversion in java and having loss of information.
This is also know as implicit casting or explicit casting.
Ex.
int a=10;
double d=a;
/*Without type casting – Implicit type casting*/

double d=9.19;
int a=d;
/*Error Incompatible data type – Need explicit type casting*/
Problems with explicit type casting in java
Loss of information is possible in explicit type casting in java.
Ex.
d=9.997;
a=(int)d;
System.out.println("Double in int = "+a); // a is 9 Loss of information
Solution :
d=9.997;
a=(int)Math.round(d);
System.out.println("Double in int = "+a); // a is 10 Solved
Program
class DataTypeDemo
{
public static void main(String st[])
{

int a=9997;
double d=a;
System.out.println("Integer in double = "+d);

d=9.997;
a=(int)d;
System.out.println("Double in int = "+a);

d=9.997;
a=(int)Math.round(d);
System.out.println("Double in int = "+a);
}
}

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Please watch: "Type Cast Operator in C++ (static_cast ऑपरेटर के बारे में जानें ...)"
https://www.youtube.com/watch?v=RYjOzfo3w78
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