Java Programming Intermediate Quiz 2
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Intermediate Quiz 2
1. Which collection does not allow duplicate elements?
Set
List
Map
2. How do you compare two Strings for equality?
str1.equals(str2)
str1 == str2
equals(str1, str2)
3. Which modifier makes a variable accessible only within its own class?
private
protected
public
4. What is the result of 5 / 2 in Java (both ints)?
2
2.5
3
5. Which method converts a String to an int?
Integer.parseInt()
toInt()
parseInteger()
6. What does the "static" keyword mean for a method?
It belongs to the class, not instances
It can only be called once
It cannot be overridden
7. Which interface is used for sorting collections?
Comparable
Runnable
Serializable
8. What is the output of: System.out.println(3 + 4 + "Java");?
7Java
34Java
Java7
9. How do you declare an abstract method?
abstract void myMethod();
void abstract myMethod();
void myMethod() abstract;
10. Which of these is not a primitive type?
String
int
double
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