What will be the output of the given program class A { int m=20, n=30; void display() { System.out.println(m); } } class B extends A{ int n=40; void display() { System.out.println(n); } } class Main | { public static void main(String Bo=new B(); int k=o.n; System.out.println(k); }
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- class Lab4Q1P3 { public static void main(String args[]) { int max = 10;while (max < 10) {System.out.println("count down: " + max);max--;}}} Do you know what is wrong with the program? I know that there is error on the 7th line but I don't know what to fix.Examine this code and determine what happens when it is run: 1 public class Test { int x; 2 3 public Test(String t){ System.out.println("Test"); } public static void main(String[] args) { Test test = new Test ("boo"); System.out.println(test.x); } 4 5 6 7 8 10 } The program has a compile error because Test does not have a default constructor. The program has a compile error because System.out.println method cannot be invoked from the constructor. ) The program runs successfully and prints out: Test O The program has a compile error because you cannot create an object from the class that defines the object.class TenNums {private: int *p; public: TenNums() { p = new int[10]; for (int i = 0; i < 10; i++) p[i] = i; } void display() { for (int i = 0; i < 10; i++) cout << p[i] << " "; }};int main() { TenNums a; a.display(); TenNums b = a; b.display(); return 0;} Continuing from Question 4, let's say I added the following overloaded operator method to the class. Which statement will invoke this method? TenNums TenNums::operator+(const TenNums& b) { TenNums o; for (int i = 0; i < 10; i++) o.p[i] = p[i] + b.p [i]; return o;} Group of answer choices TenNums a; TenNums b = a; TenNums c = a + b; TenNums c = a.add(b);
- import java.util.Scanner; public class LabProgram { // Recursive method to draw the triangle public static void drawTriangle(int baseLength, int currentLength) { if (currentLength <= 0) { return; // Base case: stop when currentLength is 0 or negative } // Calculate the number of spaces needed for formatting int spaces = (baseLength - currentLength) / 2; if (currentLength == baseLength) { // If it's the first line, don't output spaces before the first '*' System.out.println("*".repeat(currentLength) + " "); } else { // Output spaces and asterisks System.out.println(" ".repeat(spaces) + "*".repeat(currentLength) + " "); } // Recursively call drawTriangle with the reduced currentLength drawTriangle(baseLength, currentLength - 2); } public static void drawTriangle(int baseLength) { drawTriangle(baseLength, baseLength); } public static…Consider the following piece of code. (The numbers on the left margin denote line numbers.) line#01 public class funcRef {02 private int n;03 public funcRef (int m) {n = m;}04 public static void func (funcRef t) {t.n++;}05 public static void main (String [] args) {06 funcRef t1, t2;07 t1 = new funcRef(20);08 t2 = t1;09 System.out.print(t2.n);10 func(t1);11 System.out.print(t2.n);12 func(t1);13 System.out.print(t1.n);14 func(t2);15 System.out.print(t1.n);16 func(t2);17 System.out.print(t1.n);18 System.out.print(t1.n);19 return;20 }21 } Out of the following, tick the true statements and leave the false statements unticked.(More than one of the statements could be true. You get full marks only for marking all the statements correctly. There are no partial marks.) A. The output of the program will be 202022222222. B. When func(t1) is called in line…8) Now use the Rectangle class to complete the following tasks: - Create another object of the Rectangle class named box2 with a width of 100 and height of 50. Note that we are not specifying the x and y position for this Rectangle object. Hint: look at the different constructors) Display the properties of box2 (same as step 7 above). - Call the proper method to move box1 to a new location with x of 20, and y of 20. Call the proper method to change box2's dimension to have a width of 50 and a height of 30. Display the properties of box1 and box2. - Call the proper method to find the smallest intersection of box1 and box2 and store it in reference variable box3. - Calculate and display the area of box3. Hint: call proper methods to get the values of width and height of box3 before calculating the area. Display the properties of box3. 9) Sample output of the program is as follow: Output - 1213 Module2 (run) x run: box1: java.awt. Rectangle [x=10, y=10,width=40,height=30] box2: java.awt.…
- TASK 3. Console Input and Output. Review Scanner class and its methods, Implement the following code, make sure it runs without errors. 1 package 1lessons; 3 import java.util.Scanner; 4 5 public class ReportSum3 { public static void main(String args[]) { Scanner sc = new Scanner(System. in); 60 7 8 // Prompt the user to enter the first integer System.out.println("Enter the value for 'a' and press Enter: "); int a = sc.nextInt(); // Prompt the user to enter the second integer System.out.println("Enter the value for 'b' and press Enter: "); int b = sc.nextInt(); 10 11 12 13 14 15 16 17 18 19 20 21 22 } //Close the Scanner. It's a good practice to release the resource that was acquired sc.close(); // Display the result System.out.printf( "Provided Integers: %4d and %4d, the total is %5d\n", a, b, (a + b)); } To simplify the task, we came out with the idea to use Methods. Implement a method to add two integers.FIX THE CODE PROVIDED BELOW Part 2 - Syntax Errors and Troubleshooting The code below has many syntax (and other) errors. Tasks:Compile the code and fix the errors one at a time. // Lab1a.java // This short class has several bugs for practice. // Authors: Carol Zander, Rob Nash, Clark Olson, you public class Lab1a { public static void main(String[] args) { compareNumbers(); calculateDist(); } publicstatic void compareNumbers() { int firstNum = 5; int secondNum; System.out.println( "Sum is: + firstNum + secondNum ); System.out.println( "Difference is: " + (firstNum - secondNum ); System.out.println( "Product is: " + firstNun * secondNum ); } public static void calculateDistance() { int velocity = 10; //miles-per-hour int time = 2, //hoursint distance = velocity * timeSystem.out.println( "Total distance is: " distanace); } } Part 3 - Print Statements and Simple Methods Use "print" and "println" statements, but use method calls to reduce the number of repeated "print"and "println"…public class F { private boolean x; public class Test { public static void main (String[] args) { Ff = new F(); System.out.println(f.x); System.out .println(f. convert (f.x)); } public static void main(String[] args) { Ff = new F (); System.out.println (f.x); System.out.println(f.convert ()); private int convert(boolean b) { return x ? 1: -1; Is the above code in the classes above correct? Circle your answer choice: YES or NO If NO, write below the corrected code.
- Compute: z = y √x Ex: If the input is 4.0 3.0, then the output is: 1.0 1 import java.util.Scanner; 2 3 public class MathFunctions { 4 5 6 7 8 9 10 11 12 13 14 15 16 17} public static void main (String[] args) { Scanner scnr = new Scanner(System.in); double x; double y; double z; } X = scnr.nextDouble(); y scnr.nextDouble(); /* Your code goes here */ System.out.printf("%.1f\n", z); // This will output z with 1 decimal place. [public class worksheet3_1 { public static void main(String[] arg) { ShadowingExample example = new ShadowingExample(); example.x = 99; example.sampleMethod(); }}class ShadowingExample { int x; public void sampleMethod() { int x = 0; System.out.println("the value of local variable x = " + ………………………………………………); System.out.println("the value of instance variable x = " + …………………………………………); }} what should be written in the second print statement so that the output is: the value of instance variable x = 99 what should be written in the first print statement so that the output is: the value of local variable x = 0 options are: samplemethod.x this.x shadowingexample.x x Answer 1 Question 1import java.util.Scanner; public class LabProgram { // Recursive method to draw the triangle public static void drawTriangle(int baseLength, int currentLength) { if (currentLength <= 0) { return; // Base case: stop when currentLength is 0 or negative } // Calculate the number of spaces needed for formatting int spaces = (baseLength - currentLength) / 2; if (currentLength == baseLength) { // If it's the first line, don't output spaces before the first '*' System.out.println(" ".repeat(spaces) + "*".repeat(currentLength)); } else { // Output spaces and asterisks System.out.println(" ".repeat(spaces) + "*".repeat(currentLength)); } // Recursively call drawTriangle with the reduced currentLength drawTriangle(baseLength, currentLength - 2); } public static void drawTriangle(int baseLength) { drawTriangle(baseLength, baseLength); } public…