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+package verEasyJavaCalculator;%0A%0Aimport java.awt.event.ActionListener;%0A%0Apublic interface Vista %7B%0A%09%0A%09// Los %22FLAGS%22 de los botones%0A%09%0A%09public static final String UNO = %221%22;%0A%09public static final String DOS = %222%22;%0A%09public static final String TRES = %223%22;%0A%09public static final String CUATRO = %224%22;%0A%09public static final String CINCO = %225%22;%0A%09public static final String SEIS = %226%22;%0A%09public static final String SIETE = %227%22;%0A%09public static final String OCHO = %228%22;%0A%09public static final String NUEVE = %229%22;%0A%09public static final String CERO = %220%22;%0A%09public static final String SUMAR = %22+%22;%0A%09public static final String RESTAR = %22-%22;%0A%09public static final String MULTIPLICAR = %22*%22;%0A%09public static final String RESULTADO = %22RESULTADO%22;%0A%09public static final String RESETEAR = %22RESETEAR%22;%0A%09%09%0A%09// Referencia al controlador%0A%09%09%0A%09public void controlador(ActionListener ctr);%0A%09%0A%09// Metodos para actualizar la vista%0A%09%0A%09public void valorResultado(int valor);%0A%09%0A%09public void operacionActual(String texto);%0A%09%0A%09public void updateFaseLabel(int valor);%0A%09%0A%0A%7D%0A

Create Vista.java