Java class data types
290
Partially supported packages and classes
The following classes are partially supported. They have some unsupported
native methods:
♦ java.lang.ClassLoader
♦ java.lang.Compiler
♦ java.lang.Runtime (exec/load/loadlibrary)
♦ java.lang.SecurityManager
♦ java.io.File
♦ java.io.FileDescriptor
♦ java.io.FileInputStream
♦ java.io.FileOutputStream
♦ java.io.RandomAccessFile
♦ java.util.zip.Deflater
♦ java.util.zip.Inflater
User-defined Java classes
Users with DBA permissions can install Java classes into a database. Any
public class installed into the database becomes available as a data type.
The Java Development Kit (JDK) provides the tools necessary for preparing
classes for installation into a database.
v To prepare a class for installation, using the JDK:
1 Using a text editor, write a Java class, outside the database, and store it
as a Java source code file (typically with an extension of
.java
).
For example, you may create a file named
MyFirstClass.java
.
2Using the
javac
compiler, compile the Java class to produce a Java class
file (with
.class
extension).
For example, to compile the file
MyFirstClass.java
, type the following at
a command prompt:
javac MyFirstClass.java
Once you have a compiled Java class file, you can install it into the database.
You can do this conveniently using either Sybase Central or Interactive SQL.
Preparing classes
using the JDK
Installing a class
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