1 class Main { 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 е 1 2 3 4567 function void main() { // Declare local variables var int x1, y1, x2, y2; // Initalize the variables let x1 = 0; let y1 = 0; let x2 = 30; let y2 = 30; // Move the square to the Right while (x2 <482) { // Draw the rectangle in black do Screen.setColor(ture); //let's draw a rectangle on Screen do Screen.drawRectangle(x1, y1, x2, y2); // wait for 1/2 second (500 msec) do Sys.wait(500); //Draw the same rectangle again (in white) do Screen.setColor(false); do Screen.drawRectangle(x1, y1, x2, y2); // Update the coordinates to move the square Right let x1 = x1 + 30; let x2 = x2 + 30; }

1 class Main { 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 е 1 2 3 4567 function void main() { // Declare local variables var int x1, y1, x2, y2; // Initalize the variables let x1 = 0; let y1 = 0; let x2 = 30; let y2 = 30; // Move the square to the Right while (x2 <482) { // Draw the rectangle in black do Screen.setColor(ture); //let's draw a rectangle on Screen do Screen.drawRectangle(x1, y1, x2, y2); // wait for 1/2 second (500 msec) do Sys.wait(500); //Draw the same rectangle again (in white) do Screen.setColor(false); do Screen.drawRectangle(x1, y1, x2, y2); // Update the coordinates to move the square Right let x1 = x1 + 30; let x2 = x2 + 30; }

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter3: Using Methods, Classes, And Objects

Section: Chapter Questions

Problem 16RQ

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Similar questions

A(n) ____________ is one instance or variable of a class.
In previous chapters, you have created programs for the Greenville Idol competition. Now create a Contestant class with the following characteristics: The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing Dancing, Musical instrument, and Other. The class contains an auto-implemented property that holds a contestants name. The class contains fields for a talent code and description. The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set. Modify the GreenvilleRevenue program so that it uses the Contestant class and performs the following tasks: The program prompts the user for the number of contestants in this years competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value is entered. The expected revenue is calculated and displayed. The revenue is $25 per contestant. The program prompts the user for names and talent codes for each contestant entered. Along with the prompt for a talent code, display a list of the valid categories. After data entry is complete, the program displays the valid talent categories and then continuously prompts the user for talent codes and displays the names of all contestants in the category. Appropriate messages are displayed if the entered code is not a character or a valid code.
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