Array array1 = new Array();
array1.add( "triangle" );
array1.add( "square" );
array1.add( "pentagon" );
System.out.println( "array1 = " + array1 );
// Illustrate copy construction.
Array array2 = new Array( array1 );
System.out.println( "array2 = " + array2 );
System.out.println( "array1.equals( array2 ) = " + array1.equals( array2 ) );
// Illustrate assignment using copy().
Array array3 = new Array();
array3.add( "heptagon" );
array3.add( "octagon" );
System.out.println( "before copy, array3 = " + array3 );
array3.copy( array1 );
System.out.println( "after copy, array3 = " + array3 );
// Illustrate cloning.
Array array4 = (Array) array1.clone();
System.out.println( "array4 = " + array4 );
