Programming languages | Practice Questions

Multiple choice technology programming languages

Sentences and statements must start on a new line.

True
False

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Multiple choice technology programming languages

When defining a file layout it is placed in the file section of the data division. Each record begins with an "01", a space, and the record name. Fields within a record traditionally began with 05?

All of these answers.
This is an alternate name for the 05 name.
This is a breakdown of the 05 field.
This is another format for the field.

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Multiple choice technology programming languages

Condition names are names associated with a field that take on a true/false status depending on whether their value is equal to the field value. They are indicated by a level number of what?

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Multiple choice technology programming languages

If a field is defined as Pic s9(6)v99 comp-3, it uses 5 bytes of storage.

True
False

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Multiple choice technology programming languages

If we are limited to 5 bytes of storage, is there be a way to store a complete 8 digit date?

True
False

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Multiple choice technology programming languages

You store it as YYYYMMDD in 8 bytes. What is the COBOL definition of this field?

Pic Y(4)M(2)D(2)
Pic date(yyyymmdd)
Pic date(8)
Pic X(8)

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Multiple choice technology programming languages

class PrintTest{ public static void main(String[] args) { double d=222.4578; System.out.printf(“% .2f”,d); } }

Does not compile
Throws IllegalFormatConversionException
Prints 222.46
Prints 222.45

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Multiple choice technology programming languages

What is the result of compiling and running the following code, assuming that the file bb.txt does not exist? class WriterTest{ public static void main(String[] args) throws IOException{ Writer w=new BufferedWriter(new FileWriter(“bb.txt”)); // Line1 w.write(1); // Line2 w.close(); } }

Compiler error
FileNotFoundException thrown at line 1
IOException thrown at line 2
None of these

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Multiple choice technology programming languages

Which of the following statements are true about the default implementation of the public int hashCode() method of the Object class?

The Object class does not provide any implementation for the hashCode method; every class must override it
As far as it may be practically possible, the hashCode method defined by the Object class does return distinct integers for distinct objects
For two object references referring to the same object, the hashCode method returns the same integer
It returns a fixed number that internally represents the Object class for the JVM
Only choice D is correct

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Multiple choice technology programming languages

whether the casting of objects can be done in java?

True
False

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