Charset isSupported() method in Java with Examples
Last Updated :
01 Dec, 2020
The isSupported() method is a built-in method of the java.nio.charset checks if a given charset is supported or not.
Syntax:
public final boolean isSupported()
Parameters: The function accepts a single mandatory parameter charset Name which specifies the canonical name or the alias name which is to be checked.
Return Value: The function returns a boolean value. It returns true if it is supported, else it returns false.
Errors and Exceptions: The function throws two exceptions as shown below:
- IllegalCharsetNameException: It is thrown if the given charset name is illegal
- IllegalArgumentException : It is thrown if the given charset Name is null
Below is the implementation of the above function:
Program 1:
Java
import java.nio.charset.Charset;
public class GFG {
public static void main(String[] args)
{
try {
System.out.println( "ISO-2022-CN"
+ " is supported or not? :"
+ Charset.isSupported( "ISO-2022-CN" ));
}
catch (Exception e) {
System.out.println( "Exception: "
+ e);
}
}
}
|
Output:
ISO-2022-CN is supported or not? :true
Program 2:
Java
import java.nio.charset.Charset;
public class GFG {
public static void main(String[] args)
{
try {
System.out.println( "ISO is "
+ "supported or not? :"
+ Charset.isSupported( "ISO" ));
}
catch (Exception e) {
System.out.println( "Exception: " + e);
}
}
}
|
Output:
ISO is supported or not? :false
Program 3:
Java
import java.nio.charset.Charset;
public class GFG {
public static void main(String[] args)
{
try {
System.out.println( "NULL is "
+ "supported or not? :"
+ Charset.isSupported( "" ));
}
catch (Exception e) {
System.out.println( "Exception: "
+ e);
}
}
}
|
Output:
Exception is java.nio.charset.IllegalCharsetNameException:
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/charset/Charset.html#isSupported-java.lang.String-
Share your thoughts in the comments
Please Login to comment...