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System.out.print

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AP Computer Science A

Definition

System.out.print is a Java statement used to display output on the console. It allows you to print text or values directly to the standard output stream.

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Practice Questions (20+)

What does the following code print out? int x = 3; x++; System.out.print("x--" + ", "); System.out.print("++x");
Consider the following method: public void printFibonacci(int n) { int a = 0; int b = 1; System.out.print(a + " " + b + " "); for (int i = 2; i < n; i++) { int sum = a + b; System.out.print(sum + " "); a = b; b = sum; } } Assume that the method printFibonacci(6) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printSquares(int n) { for (int i = 1; i <= n; i++) { System.out.print(i * i + " "); } } Assume that the method printSquares(5) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printEvenNumbers(int n) { for (int i = 2; i <= n; i += 2) { System.out.print(i + " "); } } Assume that the method printEvenNumbers(8) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printPowersOfTwo(int n) { for (int i = 0; i <= n; i++) { int power = (int) Math.pow(2, i); System.out.print(power + " "); } } Assume that the method printPowersOfTwo(5) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printDigits(int n) { while (n != 0) { int digit = n % 10; System.out.print(digit + " "); n /= 10; } } Assume that the method printDigits(12345) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printFactors(int n) { for (int i = 1; i <= n; i++) { if (n % i == 0) { System.out.print(i + " "); } } } Assume that the method printFactors(24) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void printPrimeNumbers(int n) { for (int i = 2; i <= n; i++) { boolean isPrime = true; for (int j = 2; j <= Math.sqrt(i); j++) { if (i % j == 0) { isPrime = false; break; } } if (isPrime) { System.out.print(i + " "); } } } Assume that the method printPrimeNumbers(20) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void calculateFactorial(int n) { int factorial = 1; for (int i = 1; i <= n; i++) { factorial *= i; } printFactorial(n, factorial); } public void printFactorial(int n, int factorial) { System.out.print(n + "! = " + factorial); } Assume that the method calculateFactorial(5) appears in a method in the same class. What is printed as a result of the method call?
Consider the following method: public void calculatePower(double base, int exponent) { double result = Math.pow(base, exponent); printPower(base, exponent, result); } public void printPower(double base, int exponent, double result) { System.out.print(base + "^" + exponent + " = " + result); } Assume that the method calculatePower(2, 3) appears in a method in the same class. What is printed as a result of the method call?
Given the following code: ``` class A { public static void show() { System.out.print("A"); } } class B extends A { public static void show() { System.out.print("B"); } } class C extends B { public static void show() { System.out.print("C"); } } ``` What will be the output when the following code is executed? ``` A obj1 = new C(); B obj2 = new C(); C obj3 = new C(); obj1.show(); obj2.show(); obj3.show(); ```
Given the following code: ``` class A { public void display() { System.out.print("A"); } } class B extends A { public void display() { System.out.print("B"); } } class C extends B { public void display() { System.out.print("C"); } } ``` What will be the output when the following code is executed? ``` B obj1 = new C(); C obj2 = new C(); A obj3 = new C(); obj1.display(); obj2.display(); obj3.display(); ```
What will the following code output: for (int i = 0; i < 5; i++) { System.out.print(i + " "); }
What output do we get if we run the following code? class X { private int a; private int y; public X() { this.a = 5; } public X(int y) { this(); this.y = y; System.out.print(a); System.out.print(this.y); } } public class Z { public static void main(String[] args) { X x = new X(3); } }
Does the following code compile successfully? ```java class X { private int a; private int y; public X() { this.a = 10; } public X(int y) { this(); this.y = y * 10; System.out.print(this.a + " "); System.out.print(this.y + " "); } } public class Z { public static void main(String[] args) { X x = new X(5); } } ```
What is the output of the following code? ```java class X { private int a; private int y; public X() { a = 15; } public X(int y) { this(); X.y = y; System.out.print(this.a + " "); System.out.print(this.y + " "); } } public class Z { public static void main(String[] args) { X x = new X(5); } } ```
What output do we get if we run the following code? ```java class X { private int a; private int y; public X() { this.a = 3; } public X(int y) { this("z"); this.y = y; System.out.print(this.a + " "); System.out.print(this.y + " "); } } public class Z { public static void main(String[] args) { X x = new X(7); } } ```
What is the output of the following code? int[ ] nums = {2, 8, 4, 3}; for (int num : nums) { num *= 2; } for (int num : nums) { System.out.print(num + " "); }
What is the output of the following code? int[ ] nums = {0, 2, 3, 1}; for (int num : nums) { System.out.print(nums[num]); }
What is the output of the following code? ``` int x = 1; while (x < 5) { System.out.print(x + " "); x ++; } ```

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System.out.print

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AP Computer Science A

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System.out.print

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AP Computer Science A

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Practice Questions (20+)

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