Techii Quizzz

Which of those is synchronized ?

• Arraylist

• Linked list

• vector

• None of the above

Which of those permits the storage of the many null values ?

• Set

• List

• None of the above

• Both a and b

What is the output of the following ?

for(int i=0;i<10;i++)

numbers[ i ]=2*i+1;

which index of the array holds the value of 5 ?

• 1

• 2

• 3

• 4

The first value of an array called quizzes can be accessed with which of the following statements ?

• quizzes[1]=100;

• quizzes[0]=100;

• quizzes[zero]=100;

• quizzes[one]=100;

What will be printed as the output of the following program ?

public class testincr {

public static void main(String args[]) {

int i = 0;

i = i++ + i;

System.out.println(“ I = ” +i);

}

}

• I=0

• I=1

• I=2

• Error

Flowcharts typically do not display programming language commands ?

• True

• False

What is the type and value of the following expression? (Notice the integer

division)

-4+ 1/2 +2*-3 +5.0

• int -5

• double -4.5

• int -4

• double -5.0

What is the output of the following ?

class increment {

public static void main(String args[]) {

double var1 = 1 + 5;

double var2 = var1 / 4;

int var3 = 1 + 5;

int var4 = var3 / 4;

System.out.print(var2 + " " + var4); } }

• 1 1

• 0 1.5

• 1.5 1

• 1 1.5

The java does not include ____________

• variables

• operators

• methods

• Global variable

Which statement generates random numbers in the range from 0 to 100?

• 101 * Math.random();

• 100 * Math.random();

• (0 - 100) * Math.random();

• (100 - 0) * Math.random() + 100;