Using the BYTE type

When calling a Java method with an expression evaluating to a BYTE, the runtime system converts the BYTE handle to an instance of the com.fourjs.fgl.lang.FglByteBlob class implemented in $FGLDIR/lib/fgl.jar. You can then manipulate the LOB from within the Java code.

You must add $FGLDIR/lib/fgl.jar to the class path in order to compile Java code with com.fourjs.fgl.lang.FglByteBlob class.

The com.fourjs.fgl.lang.FglByteBlob class implements the following:

Table 1. Methods of the com.fourjs.fgl.lang.FglByteBlob class
Method	Description
`void dispose()`	Dereferences the underlying `BYTE` variable.
`java.lang.String toString()`	Returns the HEX string representing the binary data.
`static FglByteBlob valueOf( java.lang.String val)`	Creates a new `FglByteBlob` object from a String object representing the binary data in HEX format.

In the Java code, you can pass a com.fourjs.fgl.lang.FglByteBlob object as in this example:

public static void useByte(FglByteBlob b) throws ParseException {
    String s = b.toString();
    ...
}

If you need to create a com.fourjs.fgl.lang.FglByteBlob object in your program, you can use the valueOf() class method as in this example:

IMPORT JAVA com.fourjs.fgl.lang.FglByteBlob
MAIN
  DEFINE jbyte com.fourjs.fgl.lang.FglByteBlob
  LET jbyte = FglByteBlob.valueOf("0FA5617BDE")
  DISPLAY jbyte.toString()
END MAIN