
Test SDIAZ - GrupoD
Authored by Ottho Fon
Computers
University
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Qué sucede si una variable local no se inicializa antes de usarla?
El compilador asigna un valor predeterminado a la variable.
El programa lanza una excepción en tiempo de ejecución.
El compilador genera un error.
La variable conserva su valor anterior.
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Que imprimirá el siguiente código?
public static void main(String[] OwO) {
double b;
b=4;
double a=(b=3.0);
double c= (float) a*b;
System.out.print(a + " "+b+" "+c);
}
4.0 4.0 16.0
3.0 4.0 12.0
3.0 3.0 9.0
No compila
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
¿Cuál es la salida del siguiente fragmento de código?
int a = 5;
int b = 3;
int result = a++ + (++b 2) - (a-- b++);
System.out.println(result);
1
-6
-11
0
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Que pasará?
public class Main {
public static void main(String[] args) {
for (int i = 1; i < 10 ; i++);
{
System.out.println("¿Es posible?");
};
}
}
No compila
Imprime el mensaje 10 veces
No imprime nada
Imprime el mensaje 1 vez
Error en ejecución
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál de las siguientes declaraciones de variables es incorrecta según las reglas de Java?
String s1 = "Hello", s2 = "World";
int x = 5, y = 10, z = x + y;
boolean flag1 = true, flag2, flag3 = false;
double d1 = 3.14, double d2 = 2.71;
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Que imprimirá el siguiente código?
public static void main (String [] xy){
double a= 10/3;
System.out.print(a);
}
3.0
3
3.3333333333
No compila
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es el resultado de la siguiente expresión booleana? public class EjemploDePregunta {
public static void main(String[] args) {
int a = 5;
int b = 7;
boolean result =;
System.out.println(result);
}
}
verdadero
falso
La expresión genera un error de compilación.
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