The document defines a Java class named 'rectangle' with attributes for height, width, and color, along with methods to set these properties, calculate area and perimeter, and print the color. It includes constructors for initializing a rectangle with specific dimensions or default values. Additionally, there is a demo class titled 'rectangledemo' that encapsulates this rectangle class.

1. public class RectangleDemo {
private class Rectangle {
private double height;
private double width;
private String color;
public Rectangle(double wid, double high){
height = high;
width = wid;
}
public Rectangle(){
height = 1;
width = 1;
color = "White";
}
public void setHeight(double high){
height = high;
}
public void setWidth(double wid){
width = wid;
}
public void setColor(String col){
color = col;
}
public double getArea(){
return height*width;
}
public double getPerimeter(){
return 2*(height + width);
}
public void getColor(){
System.out.println("Color is: " + color +" ");
return;
}
}

2. Solution
public class RectangleDemo {
private class Rectangle {
private double height;
private double width;
private String color;
public Rectangle(double wid, double high){
height = high;
width = wid;
}
public Rectangle(){
height = 1;
width = 1;
color = "White";
}
public void setHeight(double high){
height = high;
}
public void setWidth(double wid){
width = wid;
}
public void setColor(String col){
color = col;
}
public double getArea(){
return height*width;
}
public double getPerimeter(){
return 2*(height + width);
}
public void getColor(){
System.out.println("Color is: " + color +" ");
return;
}
}