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Objects and their properties

Theory

What is my age?

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You have the class Tree:

class Tree {
    String sort;
    int age;
    double height;
}

After you execute the following code,

Tree tree1 =  new Tree();
Tree tree2 = tree1;
Tree tree3 = tree2;


tree1 = new Tree();
tree1.age = 5;
tree2.age = 10;
tree3 = null;

what will be the value of tree1.age ?

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