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