// MethodTest1.java

// Demonstrate getConstructors(), getDeclaredMethods(),
// getMethods(), getParameterTypes() functions.
// Updated 1/14/2003

// Suggested practice:
// #1: Display the parameter list of each constructor in the Hero class.
// #2: When displaying a list of method names, display "package, public, 
//		or private" before each method name.
// #3: Call getDeclaredField() to access the strength field

import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;

class Hero implements Comparable
{	
	public Hero( )
	{
		name = "unknown";
		strength = 0;
	}	
	
	public Hero( String pName, int str )
	{ 
		name = pName;
		strength = str;
	}
	
	public int compareTo( Object rhs )
	{
		Hero other = (Hero) rhs;
		return getName().compareTo( other.getName( ) );			
	}	

	public String getName( )
	{
		return name + " " + strength;
	}	
	
	void setName( String pName )
	{
		name = pName;
	}	

	private void restoreStrength( )
	{
		strength += (int)(java.lang.Math.random() * 10) % 5;
	}
	
	
	private	String name;
	public int strength;
}  // Hero	


class MethodTest1
{
	public static void main( String[] args )
	{
		Class c1 = null;
		try {
		// create Class object from a class name
			c1 = Class.forName( "Hero" );
		}
		catch( ClassNotFoundException e )
		{
			System.out.println( "Unable to find the class" );
			System.exit( 1 );
		}	

		// get and display all interfaces
		Class clArray[] = c1.getInterfaces( );

		for( int i = 0; i < clArray.length; i++ )
			System.out.println( "Interface: " + clArray[i].getName( ) );
		
		// get and display all public constructors
		Constructor[] cArray = c1.getConstructors( );
		for( int i = 0; i < cArray.length; i++ )
			System.out.println( "Constructor: " + cArray[i].getName( ) );
		
		// get inherited and current public methods
		//Method[] mArray = c1.getMethods( );
		
		// get only locally declared methods, possibly private.
		Method[] mArray = c1.getDeclaredMethods( );
		
		// display the array of methods
		for( int i = 0; i < mArray.length; i++ )
			System.out.println( "Method: " + mArray[i].getName( ) );

		// display parameter types for the first method in mArray
		Class parms[] = mArray[0].getParameterTypes( );
		System.out.print( "Parameter list for " + mArray[0].getName( ) + ": ( " );
		for( int i = 0; i < parms.length; i++ )
			System.out.print( parms[i].getName( ) + " " );
		System.out.println( ")" );

		// get the value of a Hero field
		String fieldName = "strength";
		try 
		{	
			Object aHero = new Hero( "Tuna Man", 12 );
			Field f = aHero.getClass( ).getDeclaredField( fieldName );
			System.out.println( "Tuna Man's " + fieldName + " = " + f.get( aHero ) );		
			
			// demonstrate the Field.equals() method
			System.out.println( f.equals( c1.getField( "strength" ) ) );

			// use the set() method to change the value of the field
			f.set( aHero, new Integer( 10 ) );
			System.out.println( "Tuna Man's " + fieldName + " = " + f.get( aHero ) );		
		} 
		catch( NoSuchFieldException e ) 
		{ 
			System.out.println( "No such field:" + fieldName );	
		}
		catch( IllegalAccessException e ) 
		{ 
			System.out.println( "Field is private:" + fieldName  );	
		}
			
	}


	
}