Detect if a package is availableTag(s): Language
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public class ClassUtils {
private ClassUtils() {}
public static boolean isAvailable(String className) {
boolean isFound = false;
try {
Class.forName(className, false, null);
isFound = true;
}
catch (ClassNotFoundException e) {
isFound = false;
}
return isFound;
}
public static boolean isJava3dAvailable() {
return ClassUtils.isAvailable("javax.media.j3d.View");
}
public static void main(String args[]) {
System.out.println ("Swing " +
(ClassUtils.isAvailable("javax.swing.JComponent")?"present":"absent"));
System.out.println ("JAI " +
(ClassUtils.isAvailable("javax.media.jai.ImageJAI")?"present":"absent"));
System.out.println ("SAX " +
(ClassUtils.isAvailable("org.xml.sax.XMLReader")?"present":"absent"));
System.out.println ("ImaginaryClass " +
(ClassUtils.isAvailable("imaginary.ImaginaryClass")?"present":"absent"));
System.out.println ("Java3d " +
(ClassUtils.isJava3dAvailable()?"present":"absent"));
/*
output :
Swing present
JAI absent
SAX present
ImaginaryClass absent
Java3d absent
*/
}
}
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