Examen Java

Examen Java

Professional Development

13 Qs

quiz-placeholder

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Examen Java

Examen Java

Assessment

Quiz

Other

Professional Development

Practice Problem

Hard

Created by

HECTOR ITURBE

Used 15+ times

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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 2 pts

1) Dada la siguiente clase:

1. class ArrayCopy3{

2. public static void main( String [] args) {

3. int [][] z1 = new int [][] {{1,2,3}, {4,5,6}};

4. for (int j= 0;j<3; j++) {

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

6. for(int k= 0;k<2; k++) {

7. System.out.print(" z1 "+ j +" "+ k +" = " + z1[j][k]);

8. }

9. }

10. }

11. }

Cual seria el resultado al ejecutarla?

La compilación falla

Una excepción es lanzada en tiempo de ejecución

z1 0 0 = 1 z1 0 1 = 2 z1 0 2 = 3

z1 1 0 = 4 z1 1 1 = 5 z1 1 2 = 6

z1 0 0 = 1 z1 0 1 = 3 z1 0 2 = 5

z1 1 0 = 2 z1 1 1 = 4 z1 1 2 = 6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Menciona los tres modificadores de acceso

Public, private, protected

Clase, static, public

Static, final, private

Class, final, static

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué es una interface?

Una súper clase

Es un conjunto de declaraciones de funciones

Una herencia múltiple

Un fichero public

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

¿Qué se debe utilizar para simular la herencia múltiple de una clase?

Extends

Public

Implements

Interface

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Para que se utiliza la clase abstract?

Para poder ser accesibles en otras clases

Para acceder desde otros paquetes

Para la clase base para la herencia

Para ser una súper clase

6.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

¿Qué hace el siguiente código fuente?

int x=0; boolean flag = false; while ((x<10) || !flag) { System.out.println(x); x++; }

Muestra los números del 0 al 9

Muestra los números del 1 al 10

Muestra un 10

Se queda en un bucle infinito

7.

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

int x= 0;

do {

System.out.println(x);

x++;

} while (x<10);

int y= 0;

while (y<10){

System.out.println(y);

y++;

}

x=9 y=9

x=10 y=10

x=9 y=10

Error de compilación

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