ClassAnalyzer template

gistfile1.java

package tp2;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class ClassAnalyzer {

	public static void analyzeClass(String className)
			throws ClassNotFoundException {
		Class<?> cl = loadClass(className);

		printClassDeclaration(cl);
		System.out.println(" {");

		System.out.println();
		printFields(cl);

		System.out.println();
		printConstructors(cl);

		System.out.println();
		printMethods(cl);

		System.out.println("}");
	}

	/**
	 * Loads a class {@code className} from a classpath.
	 * 
	 * @param className
	 *            - name of a class
	 * @return a class object representing the given class
	 * @throws ClassNotFoundException
	 *             in case no such class could have been loaded
	 */
	public static Class<?> loadClass(String nomClasse)
			throws ClassNotFoundException {
		// TODO: finish
		return null;
	}

	/**
	 * Outputs a class declaration.
	 * 
	 * For example for class: {@code java.util.ArrayList} it will output:
	 * 
	 * <pre>
	 * public class ArrayList extends AbstractList implements List, RandomAccess, Cloneable, Serializable
	 * </pre>
	 */
	public static void printClassDeclaration(Class<?> cl) {
		// TODO: print modifiers (look at java.lang.reflect.Modifier)
		// TODO: print out class name
		System.out.print(" class ");

		// TODO: print out super class (if any, java.lang.Object is implicit)
		System.out.print(" extends ");

		// TODO: print out all implemented interfaces (if any)
		System.out.print(" implements ");
	}

	/**
	 * Outputs class' constructors.
	 * 
	 * For example for class: {@code java.util.ArrayList} it will output:
	 * 
	 * <pre>
	 *     public ArrayList(int initialCapacity)
	 *     public ArrayList()
	 *     public ArrayList(Collection c)
	 * </pre>
	 */
	public static void printConstructors(Class<?> cl) {
		// TODO: print all class constructors
	}

	/**
	 * Outputs class' fields.
	 * 
	 * For example for class: {@code java.util.ArrayList} it will output:
	 * 
	 * <pre>
	 * private static final long serialVersionUID;
	 * private transient Object[] elementData;
	 * private int size;
	 * ...
	 * </pre>
	 */
	public static void printFields(Class<?> cl) {
		// TODO: print all class fields
	}

	/**
	 * Outputs class' methods.
	 * 
	 * For example for class: {@code java.util.ArrayList} it will output:
	 * 
	 * <pre>
	 * public int size();
	 * public boolean isEmpty();
	 * public boolean contains(Object o);
	 * public int indexOf(Object o);
	 * ...
	 * </pre>
	 */
	public static void printMethods(Class<?> cl) {
		// TODO: print all class methods
	}

	public static void main(String[] args) {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String input = null;
		while (true) {
			try {
				System.out
						.print("Enter a fully qualified class name (ex : java.util.ArrayList): ");
				input = br.readLine();
				if (input == null || "".equals(input)) {
					break;
				}
				
				analyzeClass(input);
				System.out.println();
			} catch (ClassNotFoundException e) {
				System.out.println("Ups, class does not seem to exist in the current classpath");
			} catch (IOException e) {
				System.out.println("I/O error");
				e.printStackTrace();
			}
		}
	}

}