Mega Code Archive
Constructor Reflection
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import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
public class ReflectionTest {
public static void main(String[] args) {
String name = "java.util.Date";
try {
Class cl = Class.forName(name);
Class supercl = cl.getSuperclass();
System.out.print("class " + name);
if (supercl != null && !supercl.equals(Object.class))
System.out.println(" extends " + supercl.getName());
System.out.print("Its constructors:");
printConstructors(cl);
System.out.println();
} catch (ClassNotFoundException e) {
System.out.println("Class not found.");
}
}
public static void printConstructors(Class cl) {
Constructor[] constructors = cl.getDeclaredConstructors();
for (int i = 0; i < constructors.length; i++) {
Constructor c = constructors[i];
Class[] paramTypes = c.getParameterTypes();
String name = c.getName();
System.out.print(Modifier.toString(c.getModifiers()));
System.out.print(" " + name + "(");
for (int j = 0; j < paramTypes.length; j++) {
if (j > 0)
System.out.print(", ");
System.out.print(paramTypes[j].getName());
}
System.out.println(");");
}
}
}
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