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GWT Google Charts Java technologies Quiz

GWT Google Charts Java technologies Quiz

In legacy IE 6, VML is used to draw the graphics. Google Chart Java Module is a open source java based library to provides an elegant and feature rich Google Charts visualizations within a GWT application and can be used along with GWT widget libraries.

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Quiz Questions And Answers

Consider the following code part: String strA = new String (“Geroestete”); String strB = new String (“Chestnuts”); strA = strB; How many objects were created?

generated: 0 now available: 0
generated: 2 now available: 1
generated: 2 now available: 2

How many objects (in total) were generated? After the last instruction has been executed, how many objects can be reached (without counting the data)?

generated: 5 now available: 1
This code part is not correct.
generated: 5 now available: 5

How many objects (in total) were generated? After the last instruction has been executed, how many objects can be reached (without counting the data)?

generated: 5 now available: 5
This code part is not correct.
generated: 1 now available: 1

How many objects (in total) were generated? After the last instruction has been executed, how many objects can be reached (without counting the data)?

generated: 5 now available: 5
generated: 1 now available: 1
generated: 5 now available: 1

What kind of thing is “nothing new” in the following statement: String str = “Nichts Neues”;

A string shortcut.
A string literal.
A string in quotation marks.

Consider the code: String myString; What is the data type of myString?

String
Reference toString
Zero

Which value is assigned to a reference value to show that there is no object?

0
void
zero

Consider the code: String myString = “”; Which value does it contain myString?

a reference to a string
an empty reference
a character reference

What happens to an object that no longer has reference variables that reference it?

It remains in main memory forever.
It is swapped out to the hard disk.
The garbage collection service exposes the memory it occupies to other objects.

Consider the code: String stringA = “Wild”; String stringB = “Irish”; String stringC = “Rose”; String result; Which of the following statements assigns the variable resulta refer

result = stringA.concat( stringB.concat( stringC ) );
result.concat( stringA, stringB, stringC );
result+stringA+stringB+stringC;

If an operator like “+” has more meaning depending on the context, is it called?

overload
overloading
Revise

What is the name of an object that can not be changed after creation?

invariable
unalterable
forever

What is the result of the following instructions: String stringA = “Wild”; String stringB = “Irish”; String stringC = “Rose”; String result = stringA.trim () + stringB + stringC.

“WildIrishRose”
” Wild Irish Rose ”
“Wild Irish Rose”

What is the result of the following instructions: String ring = “A ring to enshrine them all, \ n” String find = “A ring to find them all.”

A ring to enslave them all, A ring to find them all.
A ring to enslave them all A ring to find them all.
A ring to slave them all, \ n A ring to find them all.

Why is the main()method special in a Java program?

Here the Java interpreter starts the whole program.
Only the main()method can create objects.
Each class must have a main()method.
ANSWERS

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