Java Programming Competition I

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Quizzes Created: 1 | Total Attempts: 1,667

Questions: 50 | Attempts: 1,672 | Updated: Mar 22, 2023

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Java Programming Competition I

What is the range of an int data type in Java?

What is the meaning of variable++ ?

Consider the following line of Java code. int x = 1+7*2; What will be the value of x at the end of execution of the line of code?

The Java expression: !((b != 0) || (c <= 5)) is equivalent to:

What does the following program output to the monitor: int value = 0, count = 1; value = count++ ; System.out.println("value: "+ value + “count: " + count );

What is the output of the following: int a = 0, b = 10; a = --b ; System.out.println("a= " + a + " b= " + b );

Which of the answers does the same thing as the following: value += sum++ ;

What is the name for an application that changes a human-readable programming language into a machine-readable language?

What kind of programming language is Java?

What is the result of evaluating the following expression? (1/2 + 3.5) * 2.0

The && operator works with which data types?

Which one of the following is NOT a correct variable name?

Does every Java variable use a data type?

When you compile a Java program, what are you doing?

What is a variable?

What is the process of fixing errors called?

What do you call a group of statements contained with an opening bracket and a closing bracket?

What is the output of the following program fragment? for ( int j = 0; j < 5; j++ ) { System.out.print( j + " " ); } System.out.println( );

What is the output of the following code fragment? for ( int j = 10; j > 5; j-- ) { System.out.print( j + " " ); } System.out.println( );

What must the test be so that the following fragment prints out the integers from 5 through 15? for ( int j = 5; ________ ; j++ ){ System.out.print( j + " " ); }System.out.println( );

What must the change be so that the following fragment prints out the even integers 0 2 4 6 8 10? for ( int j = 0; j <= 10; _______ ) System.out.print( j + " " ); System.out.println( );

What must the initialization be so that the following fragment prints out the integers -3 -2 -1 ? for ( _______; j < 0; j++ ) System.out.print( j + " " ); System.out.println( );

What is the output of the following code fragment? for ( int j = 5; j > -5; j-- ) System.out.print( j + " " ); System.out.println( );

What is the output of the following code fragment? int count = 0; for ( ; count < 9; ++count ) System.out.print( count + " " );

What does this code print on the monitor? int count = 7; while ( count >= 4 ) { System.out.print( count + " " ); count = count - 1; } System.out.println( );

What does this code print on the monitor? int count = 1; while ( count < 5 ) { System.out.print( count + " " ); } System.out.println( );

What condition should be used so that the code produce this output: 1 2 3 4 5 6 7 8 int count = 1; while ( ___________ ) { System.out.print( count + " " ); count = count + 1; }

Examine the following code fragment: int j = 1; while ( j < 10 ) { System.out.println( j + " " ); j = j + j%3; } What is output?

Fill in the blank so that the following adds up the odd numbers from 1 to 99 int sum = 0; for ( int num = 1; num <=99; __________ ) sum += num; System.out.println( sum );

Another word for "looping" is:

For the code below: Which are printed to standard output? int m = 0; while( m++ < 2 ) System.out.print(m);

What must the test be so that the following fragment prints out the integers 5 through and including 15? for ( int j = 5; ________ ; j++ ) { System.out.print( j + " " ); }

What must the change be so that the following fragment prints out the even integers 0 2 4 6 8 10? for ( int j = 0; j <= 10; _______ ) System.out.print( j + " " );

What must the initialization be so that the following fragment prints out the integers -3 -2 -1 ? for ( _______; j < 0; j++ ) System.out.print( j + " " );

Pick the for loop which duplicates this while loop: int x = 0; while ( x < 500 ) { System.out.println( x ); x = x + 5; }

Pick the for loop which duplicates this while loop: double x = 0.0; while ( x < 100.0 ) { System.out.println( x ); x += 0.1; }

What must the test be so that the following fragment prints out the integers -5 through and including 5? for ( int j = -5; ________ ; j++ ){ System.out.print( j + " " ); }

Fill the blank so that the following fragment prints out 0.2, 0.4, 0.6, 0.8, 1.0, for ( int j = 2; j <= 10; j+=2 ) System.out.print( __________ + ", " );

What does the following statement do? String[] widget;

What is the difference between String rats; and String[] rats; ?

What does the following statement do? int[] values = new int[10] ;

What does the following statement do? String[] names = new String[10] ;

Given the declaration String[] names = new String[10] ; Which of the following statements puts a reference to the String "Hello" in the last slot of the array?

What types of information are arrays best suited for?

Which of the following statements are valid array declaration? (A) int number(); (B) float average[]; (C) double[] marks; (D) counter int[];

46. Consider the following code int number[] = new int[5]; After execution of this statement, which of the following are true? (A) number[0] is undefined (B) number[5] is undefined (C) number[4] is null (D) number[2] is 0 (E) number.length() is 5

47. Which of the following statements does NOT define a String array called myArray that contains five elements?

48. Which of the following declares an array of int named img?

49. What are the legal indexes for the array ar, given the following declaration: int[] ar = {2, 4, 6, 8 }

What is the output of the following code fragment: int[] ar = {2, 4, 6, 8 }; System.out.println( ar[0] + " " + ar[1] );