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Diffstat (limited to 'java.html.markdown')
| -rw-r--r-- | java.html.markdown | 104 |
1 files changed, 14 insertions, 90 deletions
diff --git a/java.html.markdown b/java.html.markdown index 0f5b39af..745741f8 100644 --- a/java.html.markdown +++ b/java.html.markdown @@ -1,18 +1,3 @@ ---- -language: java -contributors: - - ["Jake Prather", "http://github.com/JakeHP"] - - ["Jakukyo Friel", "http://weakish.github.io"] - - ["Madison Dickson", "http://github.com/mix3d"] - - ["Simon Morgan", "http://sjm.io/"] -filename: LearnJava.java ---- - -Java is a general-purpose, concurrent, class-based, object-oriented computer -programming language. -[Read more here.](http://docs.oracle.com/javase/tutorial/java/) - -```java // Single-line comments start with // /* Multi-line comments look like this. @@ -47,30 +32,10 @@ public class LearnJava { /////////////////////////////////////// - // Variables + // Types & Variables /////////////////////////////////////// - - /* - * Variable Declaration - */ - // Declare a variable using <type> <name> - int fooInt; - // Declare multiple variables of same type <type> <name1>, <name2>, <name3> - int fooInt1, fooInt2, fooInt3; - /* - * Variable Initialization - */ - - // Initialize a variable using <type> <name> = <val> - int fooInt = 1; - // Initialize multiple variables of same type with same value <type> <name1>, <name2>, <name3> = <val> - int fooInt1, fooInt2, fooInt3; - fooInt1 = fooInt2 = fooInt3 = 1; - - /* - * Variable types - */ + // Declare a variable using <type> <name> // Byte - 8-bit signed two's complement integer // (-128 <= byte <= 127) byte fooByte = 100; @@ -437,26 +402,26 @@ class PennyFarthing extends Bicycle { // Example - Food: public interface Edible { - public void eat(); // Any class that implements this interface, must + public void eat(); // Any class that implements this interface, must // implement this method. } public interface Digestible { - public void digest(); + public void digest(); } // We can now create a class that implements both of these interfaces. public class Fruit implements Edible, Digestible { @Override - public void eat() { - // ... - } + public void eat() { + // ... + } @Override - public void digest() { - // ... - } + public void digest() { + // ... + } } // In Java, you can extend only one class, but you can implement many @@ -464,51 +429,10 @@ public class Fruit implements Edible, Digestible { public class ExampleClass extends ExampleClassParent implements InterfaceOne, InterfaceTwo { @Override - public void InterfaceOneMethod() { - } + public void InterfaceOneMethod() { + } @Override - public void InterfaceTwoMethod() { - } + public void InterfaceTwoMethod() { + } } -``` - -## Further Reading - -The links provided here below are just to get an understanding of the topic, feel free to Google and find specific examples. - -**Official Oracle Guides**: - -* [Java Tutorial Trail from Sun / Oracle](http://docs.oracle.com/javase/tutorial/index.html) - -* [Java Access level modifiers](http://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html) - -* [Object-Oriented Programming Concepts](http://docs.oracle.com/javase/tutorial/java/concepts/index.html): - * [Inheritance](http://docs.oracle.com/javase/tutorial/java/IandI/subclasses.html) - * [Polymorphism](http://docs.oracle.com/javase/tutorial/java/IandI/polymorphism.html) - * [Abstraction](http://docs.oracle.com/javase/tutorial/java/IandI/abstract.html) - -* [Exceptions](http://docs.oracle.com/javase/tutorial/essential/exceptions/index.html) - -* [Interfaces](http://docs.oracle.com/javase/tutorial/java/IandI/createinterface.html) - -* [Generics](http://docs.oracle.com/javase/tutorial/java/generics/index.html) - -* [Java Code Conventions](http://www.oracle.com/technetwork/java/codeconv-138413.html) - -**Online Practice and Tutorials** - -* [Learneroo.com - Learn Java](http://www.learneroo.com) - -* [Codingbat.com](http://codingbat.com/java) - - -**Books**: - -* [Head First Java](http://www.headfirstlabs.com/books/hfjava/) - -* [Thinking in Java](http://www.mindview.net/Books/TIJ/) - -* [Objects First with Java](http://www.amazon.com/Objects-First-Java-Practical-Introduction/dp/0132492660) - -* [Java The Complete Reference](http://www.amazon.com/gp/product/0071606300) |