.JavaFieldGet(object, field, SIGNATURE=NULL, SIMPLIFY=TRUE) .JavaFieldSet(object, field, value, SIGNATURE=NULL)
| object | a Java object reference or a string. If it is a string, it should be a Java class name, and these functions read or write a static field on this class. |
| field | A string naming a field within the class. |
| value | an object to be set as the field value. This can be a Java object reference, or any object that can be converted to one. |
| SIGNATURE | A string giving the Java class name of the field. If this is NULL, the appropriate class is found by calling .JavaFindFieldSignature. This must be specified to access non-public fields. |
| SIMPLIFY | A logical. If TRUE (the default), specifies that .JavaFieldGet should should call .JavaSimplify to attempt to convert the return value from a Java object reference to a simpler object, such as converting a Java double array to a double vector. |
| .JavaFieldGet | returns a Java object reference to the retrieved field value, or a simpler data value (if this is possible, and the SIMPLIFY argument is TRUE). |
| .JavaFieldSet | returns NULL. |
## read a Java static field returning the value of PI
.JavaFieldGet("java.lang.Math", "PI") ## returns PI as a double
## return Java object ref to PI value
.JavaFieldGet("java.lang.Math", "PI", SIMPLIFY=FALSE)
## specify SIGNATURE
.JavaFieldGet("java.lang.Math", "PI", SIGNATURE="D")
## gives error, because this field cannot be changed
.JavaFieldSet("java.lang.Math", "PI", 3)