Get Oracle 1Z0-809 Exam Practice Questions - Real and Updated

Given:

class Sum extends RecursiveAction { //line n1

static final int THRESHOLD_SIZE = 3;

int stIndex, lstIndex;

int [ ] data;

public Sum (int [ ]data, int start, int end) {

this.data = data;

this stIndex = start;

this. lstIndex = end;

}

protected void compute ( ) {

int sum = 0;

if (lstIndex -- stIndex <= THRESHOLD_SIZE) {

for (int i = stIndex; i < lstIndex; i++) {

sum += data [i];

}

System.out.println(sum);

} else {

new Sum (data, stIndex + THRESHOLD_SIZE, lstIndex).fork( );

new Sum (data, stIndex,

Math.min (lstIndex, stIndex + THRESHOLD_SIZE)

).compute ();

}

}

}

and the code fragment:

ForkJoinPool fjPool = new ForkJoinPool ( );

int data [ ] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

fjPool.invoke (new Sum (data, 0, dat

a.length));

and given that the sum of all integers from 1 to 10 is 55.

Which statement is true?

Given the content:

and given the code fragment:

Which two code fragments, when inserted at line 1 independently, enable the code to print ''Wie geht's?''

Given the code fragment:

public void recDelete (String dirName) throws IOException {

File [ ] listOfFiles = new File (dirName) .listFiles();

if (listOfFiles ! = null && listOfFiles.length >0) {

for (File aFile : listOfFiles) {

if (aFile.isDirectory ()) {

recDelete (aFile.getAbsolutePath ());

} else {

if (aFile.getName ().endsWith (''.class''))

aFile.delete ();

}

}

}

}

Assume that Projects contains subdirectories that contain .class files and is passed as an argument to the recDelete () method when it is invoked.

What is the result?

Given the code fragment:

List list1 = Arrays.asList(10, 20);

List list2 = Arrays.asList(15, 30);

//line n1

Which code fragment, when inserted at line n1, prints 10 20 15 30?

Given the code fragment:

Which code fragment, when inserted at line n1, ensures false is printed?