PIC 20A: Principles of Java Language with Applications

Basics of JAVA

• the static keyword in C++, HelloWorld.java
• variables of primitive data type, conversions
• Math, overloading static methods, control flow, varargs
• arrays, new, objects and reference variables, Strings,
• classes
• fields and methods
• creating instances, variables as references
• constructors, overloading, this, instance initializer blocks
• static fields, static methods, factory methods, static initializerblocks
• packages, importing, static importing
• member access modifiers (public, private, package-private)
• class access modifiers (public, package-private)

Inheritance and Polymorphism

• Inherited fields, inherited methods, super to call a constructor, super to call a method
• Polymorphism, widening conversions, explicit narrowing conversions, compile-time and run-time considerations
• abstract classes, abstract methods, polymorphism in this context, final classes, final methods, interfaces
• constructor chaining, instanceof, toString
• hiding versus overriding, access modifiers (public, package-private, protected, private), private methods are not inherited or overridden.

Autoboxing and Unboxing, Inner Classes

Graphical User Interfaces (GUIs)

• JFrame, setTitle, setDefaultCloseOperation, add, setSize, setVisible
• JLabel, GridLayout, setLayout, JOptionPane.showMessageDialog
• JButton, getText, setText
• addActionListener, ActionListener, actionPerformed, ActionEvent, getSource
• JPanel, setPreferredSize, paintComponent, repaint
• Graphics, Color, Graphics2D
• MouseListener, Timer

Exceptions

• RuntimeException, try-catch, Throwable, finally
• throw, Exception, checked exceptions, throws clause
• Error

Streams

• InputStream, OutputStream, read, write, close, IOException
• FileInputStream, FileOutputStream, FileNotFoundException, PrintStream
• ByteBuffer, ByteOrder
• Reader, Scanner