CharsetDecoder isCharsetDetected() method in Java with Examples
The isCharsetDetected() method is a built-in method of the java.nio.charset.CharsetDecoder class which tells whether or not this decoder has yet detected a charset. The default implementation of this method always throws an UnsupportedOperationException. It should be overridden by auto-detecting decoders to return true once the input charset has been determined.
Syntax:
public boolean isCharsetDetected()
Parameters: The function does not accepts any parameter.
Return Value: The function returns a boolean value stating if this CharsetDecoder has yet detected a charset.
Exception: It throws UnsupportedOperationException if this decoder does not implement an auto-detecting charset
Below is the implementation of the above function:
Program 1:
import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;
public class GFG {
public static void main(String[] args)
{
Charset charset = Charset.forName( "ISO-8859-1" );
CharsetDecoder decoder = charset.newDecoder();
System.out.println( "CharsetDecoder: " + decoder);
try {
System.out.println( "Is Charset yet detected: "
+ decoder.isCharsetDetected());
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
CharsetDecoder: sun.nio.cs.ISO_8859_1$Decoder@232204a1
java.lang.UnsupportedOperationException
Program 2:
import java.nio.charset.*;
import java.util.Iterator;
import java.util.Map;
public class GFG {
public static void main(String[] args)
{
Charset charset = Charset.forName( "x-windows-949" );
CharsetDecoder decoder = charset.newDecoder();
System.out.println( "CharsetDecoder: " + decoder);
try {
System.out.println( "Is Charset yet detected: "
+ decoder.isCharsetDetected());
}
catch (Exception e) {
System.out.println(e);
}
}
}
|
Output:
CharsetDecoder: sun.nio.cs.ext.DoubleByte$Decoder@232204a1
java.lang.UnsupportedOperationException
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/charset/CharsetDecoder.html#isCharsetDetected–
Last Updated :
27 Jun, 2019
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