Find output. //filename: Test.java class Test{ int x = 10; public static void main(String[] args) { Test t = new Test(); System.out.println(t.x); } }
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Find output.
//filename: Test.java
class Test{
int x = 10;
public static void main(String[] args) {
Test t = new Test();
System.out.println(t.x);
}
}
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- 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.// Program displays some facts about a stringpublic class DebugSeven3{public static void main(String[] args){ String quote ="Honesty is the first chapter in the book of wisdom. - Thomas Jefferson"; System.out.println("index.of('f') is: " + indexOf('f'));System.out.println("index.of('x') is: " + indexOf('x'));System.out.println("char.At(5) is: " + charAt(5));System.out.println("endsWith(\"daughter\") is: " + quote.endswith("daughter"));System.out.println("endsWith(\"son\") is: " + quote.endswith("son"));System.out.println("replace('e', '*') is: " + quote.replace('e', 'M'));}}StringFun.java import java.util.Scanner; // Needed for the Scanner class 2 3 /** Add a class comment and @tags 4 5 */ 6 7 public class StringFun { /** * @param args not used 8 9 10 11 12 public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.print("Please enter your first name: "); 13 14 15 16 17 18 System.out.print("Please enter your last name: "); 19 20 21 //Output the welcome message with name 22 23 24 //Output the length of the name 25 26 27 //Output the username 28 29 30 //Output the initials 31 32 33 //Find and output the first name with switched characters 34 //All Done! } } 35 36 37
- using System; class main { publicstaticvoid Main(string[] args) { Random r = new Random(); int randNo= r.Next(1,11); Console.Write("Hi, my name is Stevie. I am thinking of a number from 1 to 10.\nGuess which number I am thinking of? "); int guess = Convert.ToInt32(Console.ReadLine()); if (guess == randNo) { Console.WriteLine("You guessed correctly!"); } else { Console.WriteLine("I was thinking of the number "+randNo+"\nSorry! Play again."); } } } this is a guessing game program for a random number between 1-10 in C#. how can code be added to tell you if your guess is too high or too low from the chosen random number?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"…*Java* Question: Is my code correct? Please answer if it’s correct or not and why? ———————————————- *CODE* import java.util.Scanner; import java.io.*; public class Assignment3{ public static void main(String[] args){ PrintWriter output = null; try{ Scanner input = new Scanner(new File("students.txt")); output = new PrintWriter("Result.txt"); while(input.hasNextLine()){ String fName = input.next(); String lName = input.next(); double test1 = input.nextDouble(); double test2 = input.nextDouble(); double finalTest = input.nextDouble(); double total = test1*0.2+test2*0.2+finalTest*0.6; if(total>=60) output.println(fName+" "+lName+" "+total+" PASS"); } output.close(); } catch(FileNotFoundException e){ System.out.println("Error: "+e.getMessage()); } } }In C++ class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Print out the area of the rectangle.
- 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. [I need this debugged. Thanks in advance. // Application looks up home price// for different floor plans// allows upper or lowercase data entryimport java.util.*;public class DebugEight3{public static void main(String[] args){Scanner input = new Scanner(System.in);String entry;char[] floorPlans = {'A','B','C','a','b','c'};int[] pricesInThousands = {145, 190, 235};char plan;int x, fp = 99;String prompt = "Please select a floor plan\n" +"Our floorPlanss are:\n" + "A - Augusta, a ranch\n" +"B - Brittany, a split level\n" +"C - Colonial, a two-story\n" +"Enter floorPlans letter";System.out.println(prompt);entry = input.next();plan = entry.charAt(1);for(x = 0; x < floorPlans.length; ++x)if(plan == floorPlans[x])x = fp;if(fp == 99)System.out.println("Invalid floor plan code entered");else{if(fp >= 3)fp = fp - 3;System.out.println("Model " +plan + " is priced at only $" +pricesInThousands[fp] + ",000");}}}