Question

in java please

Tools Help Mode Delay Write a class called Envelope that contains the following information: 1. Private instance variables for the height and width of the envelope (int). 2. A two-argument constructor to set each of the instance variables above. If the height or width is negative, throw an llegalArgumentException sta the argument that is not correct. 3. Get and Set methods for each instance variable with the same error detection as the constructor

Answer 1

Envelope.java

public class Envelope {
private double height, width;
  
public Envelope()
{
setHeight(0.0);
setWidth(0.0);
}

public Envelope(double height, double width) {
setHeight(height);
setWidth(width);
}

public double getHeight() {
return height;
}

public void setHeight(double height) {
if(height < 0.0)
throw new IllegalArgumentException("Height of the envelope cannot be negative!");
this.height = height;
}

public double getWidth() {
return width;
}

public void setWidth(double width) {
if(width < 0.0)
throw new IllegalArgumentException("Width of the envelope cannot be negative!");
this.width = width;
}
  
@Override
public String toString()
{
return("Envelope [Height: " + String.format("%.2f", getHeight()) + ", Width: " + String.format("%.2f]", getWidth()));
}
}

EnvelopeTest.java (Driver/Main class)

public class EnvelopeTest {
  
public static void main(String[] args) {
Envelope env = new Envelope(11.2, 12.8);
System.out.println(env);
}
}

*********************************************************** SCREENSHOT *****************************************************

run: Envelope [Height: 11.20, Width: 12.80] BUILD SUCCESSFUL (total time: 0 seconds) | OR