
Programación Java. Cadenas
Quiz
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Computers
•
Professional Development
•
Practice Problem
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Medium
María Suárez
Used 1+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál será la salida de las siguientes sentencias?
Convierte “Z” a int 90 y imprime“90”
Runtime exception (erro de ejecución)
Imprime 'z'
Imprime 'Z'
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál será la salida de las sentencias siguientes?
Imprime "Str"
Runtime exception
IndexOutOfBoundsException Runtime Exception
StringIndexOutOfBoundsException error de compilación
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Selecciona que método cual de los siguientes métodos no tiene la clase String de Java
trim()
charAt()
split()
toUpper()
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál será la salida de estas sentencias?
truefalse
truetrue
falsefalse
falsetrue
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
¿Cuál de las siguientes afirmaciones son ciertas a cerca de StringBuffer y StringBuilder?
StringBuilder no es serializable
StringBuffer es serializable porque sus métodos están sincronizados
StringBuilder fué introducido en java 1.4
StringBuilder y StringBuffer son inmutables.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La forma de extraer el cuarto caracter de la cadena contenida en la variable cad es:
cad.indexOf(3)
cad.charAt(3)
cad.extract(3)
cad.get(3)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La forma correcta de comparar alfabéticamente dos cadenas es mediante:
El operador ==
el método compare() de la clase String
El método equal() de la clase String
El método equal() de la clase Character
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