?? limitedreflection.java
字號:
// Reflective instantiation with interface access - Page 159
import java.util.*;
public class LimitedReflection {
public static void main(String[] args) {
// Translate the class name into a class object
Class cl = null;
try {
cl = Class.forName(args[0]);
} catch(ClassNotFoundException e) {
System.err.println("Class not found.");
System.exit(1);
}
// Instantiate the class
Set s = null;
try {
s = (Set) cl.newInstance();
} catch(IllegalAccessException e) {
System.err.println("Class not accessible.");
System.exit(1);
} catch(InstantiationException e) {
System.err.println("Class not instantiable.");
System.exit(1);
}
// Exercise the set
s.addAll(Arrays.asList(args).subList(1, args.length-1));
System.out.println(s);
}
}
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