Narrowing conversion with information loss : Data Type Conversion « Data Type « Java Tutorial

Narrowing conversion may incur information loss, if the converted value is larger than the capacity of the target type.

In the following conversion, there is some information loss because 9876543210L is too big for an int.

public class MainClass {

  public static void main(String[] args) {
    long a = 9876543210L;
    int b = (int) a;

    System.out.println(b);
  }

}

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2.16.Data Type Conversion
	2.16.1.	The Widening Conversion
	2.16.2.	The Narrowing Conversion
	2.16.3.	Narrowing conversion with information loss
	2.16.4.	An automatic type conversion
	2.16.5.	Casting Incompatible Types
	2.16.6.	Pass a string to the Integer class constructor and call the intValue()
	2.16.7.	Use toString method of Integer class to conver Integer into String.
	2.16.8.	Declaring Checked Exceptions
	2.16.9.	Automatic Type Promotion in Expressions
	2.16.10.	Convert byte array to Integer and Long
	2.16.11.	Class with methods for type conversion
	2.16.12.	Data type conversion
	2.16.13.	Convert primitive back and forth