The following program has a compiler error, runtime error, and semantic error. State which line(s) correspond to each type of error and why. 1. public class A { 2. private int; 3. private char 1letter = ‘A’; 4.      5. public A(int num) { 6.       arr = num; 7. } 8. 9.      public int getFirstArrayElement() {10. return arr;11. }12. }

It is possible to parameterize an ArrayList with a primitive type.  For example, the following is legal: ArrayList

The ___________________________ class is the parent class or some other ancestor of all other classes in Java.

On a system using virtual memory, CPU utilization rises as more processes are loaded onto the system. But at some point, as more processes appear, the CPU utilization drops off catastrophically. What is this condition called? Why does putting in a faster CPU not help? What will help?

The declared type of a variable is used by the Java Virtual Machine, while the object type is used by the Java compiler.

Explain in one sentence the purpose of constructors. Explain in a few sentences what constructor chaining is and why it is useful.

What is the molar mass of SrBr2?

What is the van’t Hoff factor of sodium carbonate in water?

Write the class header, Node class, and variables for a generic Linked List class, (named LinkedList). The class will receive one type parameter, E. It should have a private inner class, a generic Node class. It will have the instance variables data (of type E, the type parameter) and next (which will point to an instance of the inner class). It will have a 2-arg constructor receiving them in that order and setting them. The variables and constructor will have private visibility. Getters and setters are not required nor allowed. It should have the instance variables head and size with private visibility. Getters and setters are not required nor allowed. Canvas Tip: Click on the dropdown that says “Paragraph” and switch to “Preformatted” to get a monospaced font – this can help in coding answers

Look at the following code (it is the same as the previous question): // public class FinalExamApp extends Application {    private ArrayList winterPlans = new ArrayList();    public void start(Stage stage) {        stage.setTitle(“Final Exam App”);        Label label = new Label(“Winter Idea: “);        TextField textfield = new TextField();        Button button1 = new Button(“Add Idea”);        Button button2 = new Button(“Sort Plan”);        // Code for buttons will be here        VBox root = new VBox();        root.getChildren().add(label);        root.getChildren().add(textfield);        root.getChildren().add(button1);        root.getChildren().add(button2);        Scene scene = new Scene(root);        stage.setScene(scene);        stage.show();    }} Using a lambda expression, implement the functionality of button2 such that it sorts winterPlans when pressed. Please use Collections.sort to sort your list.