
PSI - Princípios da linguagem JAVA
Authored by Diogo Cachada
Computers
12th Grade
Used 3+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o operador usado para concatenar strings em Java?
&
+
concat()
*
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que significa o termo "imutabilidade" no contexto de strings em Java?
As strings não podem ser criadas novamente.
As strings não podem ser passadas como argumentos.
As strings não podem ser modificadas após a criação.
As strings não podem ser impressas na tela.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual método é usado para obter o comprimento de uma string em Java?
size()
length()
count()
getSize()
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que faz o método charAt(index) em Java?
Retorna o caracter na posição específica
Remove o caracter na posição específica.
Adiciona um caracter na posição específica.
Substitui o caracter na posição específica.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o resultado da expressão "abc".substring(1, 3)?
a
b
bc
ab
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como você verifica se duas strings são iguais em Java?
Usando o operador "="
Usando o método "isEquals()"
Usando o método "equal()"
Usando o método "equals()"
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o operador lógico de negação em Java?
&&
||
!
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