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Test Program on java.activation.DataSource
How to write a simple test program on java.activation.DataSource? I want to try the JAF (JavaBeans Activation Framework) included in JDK.
✍: FYIcenter.com
JAF (JavaBeans Activation Framework) API 1.1 has been included in JDK 6 to 8. You can use the following simple test program, ActivationTest.java, to try it:
// Copyright (c) FYIcenter.com import javax.activation.*; public class ActivationTest { public static void main(String[] args) throws Exception { String filename = args[0]; DataSource ds = new FileDataSource(filename); System.out.println("getName() = "+ds.getName() ); System.out.println("getContentType() = " +ds.getContentType() ); } }
For JDK 9 and newer, you need to specify javax.activation-1.2.0.jar in the classpath:
fyicenter> java -version java version "17.0.5" 2022-10-18 LTS fyicenter> javac ActivationTest.java ActivationTest.java:2: error: package javax.activation does not exist import javax.activation.*; ^ ... fyicenter> javac -classpath .:javax.activation-1.2.0.jar ActivationTest.java fyicenter> java -classpath .:javax.activation-1.2.0.jar ActivationTest ActivationTest.java getName() = ActivationTest.java getContentType() = application/octet-stream
The output shows that the MIME type of "ActivationTest.java" is "application/octet-stream", which is the default for any file with an unknown file name extension.
For JDK 6 to 8, you can use the JAF code included inside JDK:
fyicenter> java -version java version "1.7.0_45" fyicenter> javac -classpath . ActivationTest.java fyicenter> java -classpath . ActivationTest ActivationTest.java getName() = ActivationTest.java getContentType() = application/octet-stream
⇐ What Is JAF (JavaBeans Activation Framework)
⇑ Downloading activation.jar - JavaBeans Activation Framework
2016-07-09, 2894🔥, 0💬
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