A class Tree has an attribute height (of type double).

1. Write the getter and setter methods of the attribute.

2. Write a constructor (with a single parameter) which initializes the attribute using the parame

3. What is the output of the following program segment?

double height0 = 40; double height1 = 60;

Tree tree2 = new Tree(80); Tree tree3 = new Tree(100); height0 = 120;

tree3 = tree2; tree2.setHeight(height0);

System.out.println(height1+ ", " + tree3.getHeight());