Java Programming - Java Strings Questions and Answers

1. String is an________

[A] class

[B] Variable

[C] Array

[D] Data type

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2. import myLibrary.*;
public class ShowSomeClass
{
// code for the class...
}
What is the name of the java file containing this program?

[A] . myLibrary.java

[B] ShowSomeClass.java

[C] ShowSomeClass

[D] ShowSomeClass.class

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3. Consider the following code snippet
String river = new String('Columbiaâ€);
System.out.println(river.length());
What is printed?

[A] 6

[B] 7

[C] 8

[D] river

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4. : If s = "text", what is the value returned by s.length()?

[A] 4

[B] 5

[C] True

[D] False

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5. What is the difference between a TextArea and a TextField?

[A] A TextArea can handle multiple lines of text

[B] A textarea can be used for output

[C] TextArea is not a class

[D] TextAreas are used for displaying graphics

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6. Given the following code fragment:
int A[];
int i = 0;
A = new int A[4];
while (i < 4)
{
A[i] = 10;
i = i + 1;
}
What is the value of A[3]?

[A] 0

[B] 3

[C] 10

[D] unknown

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7. Given the following statement:
huey.setDouble(8.0*32.2+1.0);
What must be the data type of huey?

[A] Double Field

[B] Text Field

[C] Int field

[D] Double

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8. : A compound statement is:

[A] A collection of one or more statements enclosed in braces

[B] A statement involving if and else

[C] A way of declaring variables

[D] a way of setting the value of a variable

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9. Which of these method of String class is used to obtain character at specified index?

[A] char()

[B] Charat()

[C] charat()

[D] charAt()

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10. Which of these method of String class can be used to test to strings for equality?

[A] isequal()

[B] isequals()

[C] equal()

[D] equals()

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Java Programming - Java Strings Questions and Answers

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