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Which collection class allows you to associate its elements with key values, and allows you to retrieve objects in FIFO (first-in, first-out) sequence?

java.util.ArrayList
java.util.LinkedHashMap
java.util.HashMap
java.util.TreeMap
Explanation:

LinkedHashMap is the collection class used for caching purposes. FIFO is another way to indicate caching behavior. To retrieve LinkedHashMap elements in cached order, use the values() method and iterate over the resultant collection.

Additional Questions

What will be the output of the program?

for(int i = 0; i < 3; i++) {

switch(i) {

case 0: break;

case 1: System.out.print("one ");

case 2: System.out.print("two ");

case 3: System.out.print("three ");

}

}

System.out.println("done");

Answer

What will be the output of the following program on GCC?

int main(){

static int c=5;

printf("c=%d",c--);

if(c)

main();

return 0;

}

Answer

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There are certain packages that allow people to define data items, place these items in particular records, combine the records into designated files and then manipulate and retrieve the stored datWhat are they called?

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