Update README.md

Author: NathanSweet

README.md

@@ -21,6 +21,7 @@ JsonBeans is a lightweight library that makes it easy to serialize and deseriali
 
 The `Json` class uses reflection to automatically serialize objects to JSON. For example, here are two classes (getters/setters and constructors omitted):
 
+```java
     public class Person {
        private String name;
        private int age;
@@ -31,29 +32,36 @@ The `Json` class uses reflection to automatically serialize objects to JSON. For
        private String name;
        private String number;
     }
+```
 
 Example object graph using these classes:
 
+```java
     Person person = new Person();
     person.setName("Nate");
     person.setAge(31);
     ArrayList numbers = new ArrayList();
     numbers.add(new PhoneNumber("Home", "206-555-1234"));
     numbers.add(new PhoneNumber("Work", "425-555-4321"));
     person.setNumbers(numbers);
+```
 
 The JsonBeans code to serialize this object graph:
 
+```java
     Json json = new Json();
     System.out.println(json.toJson(person));
-    
-    {"numbers":[{"class":"com.example.PhoneNumber","name":"Home","number":"206-555-1234"},{"class":"com.example.PhoneNumber","name":"Work","number":"425-555-4321"}],"age":31,"name":"Nate"}
+```
+```json {"numbers":[{"class":"com.example.PhoneNumber","name":"Home","number":"206-555-1234"},{"class":"com.example.PhoneNumber","name":"Work","number":"425-555-4321"}],"age":31,"name":"Nate"}
+```
 
 That is compact, but hardly legible. The `prettyPrint` method can be used:
 
+```java
     Json json = new Json();
     System.out.println(json.prettyPrint(person));
-    
+```
+```json
     {
     "name": "Nate",
     "age": 31,
@@ -70,13 +78,16 @@ That is compact, but hardly legible. The `prettyPrint` method can be used:
        }
     ]
     }
+```
 
 Note that the class for the `PhoneNumber` objects in the `ArrayList numbers` field appears in the JSON. This is required to recreate the object graph from the JSON because `ArrayList` can hold any type of object. Class names are only output when they are required for deserialization. If the field was `ArrayList<PhoneNumber> numbers` then class names would only appear when an item in the list extends `PhoneNumber`. If you know the concrete type or aren't using generics, you can avoid class names being written by telling the `Json` class the types:
 
+```java
     Json json = new Json();
     json.setElementType(Person.class, "numbers", PhoneNumber.class);
     System.out.println(json.prettyPrint(person));
-    
+```
+```json
     {
     "name": "Nate",
     "age": 31,
@@ -91,13 +102,16 @@ Note that the class for the `PhoneNumber` objects in the `ArrayList numbers` fie
        }
     ]
     }
+```
 
 When writing the class cannot be avoided, an alias can be given:
 
+```java
     Json json = new Json();
     json.addClassTag("phoneNumber", PhoneNumber.class);
     System.out.println(json.prettyPrint(person));
-    
+```
+```json
     {
     "name": "Nate",
     "age": 31,
@@ -114,14 +128,17 @@ When writing the class cannot be avoided, an alias can be given:
        }
     ]
     }
+```
 
 JsonBeans can write and read both JSON and a couple JSON-like formats. It supports "javascript", where the object property names are only quoted when needed. It also supports a "minimal" format, where both object property names and values are only quoted when needed.
 
+```java
     Json json = new Json();
     json.setOutputType(OutputType.minimal);
     json.setElementType(Person.class, "numbers", PhoneNumber.class);
     System.out.println(json.prettyPrint(person));
-    
+```
+```json
     {
     name: Nate,
     age: 31,
@@ -136,23 +153,28 @@ JsonBeans can write and read both JSON and a couple JSON-like formats. It suppor
        }
     ]
     }
+```
 
 ## Reading object graphs
 
 The Json class uses reflection to automatically deserialize objects from JSON. Here is how to deserialize the JSON from the previous examples:
 
+```java
     Json json = new Json();
     String text = json.toJson(person);
     Person person2 = json.fromJson(Person.class, text);
+```
 
 The type passed to `fromJson` is the type of the root of the object graph. From this, JsonBeans can determine the types of all the fields and all other objects encountered, recursively. The "knownType" and "elementType" of the root can be passed to `toJson`. This is useful if the type of the root object is not known:
 
+```java
     Json json = new Json();
     json.setOutputType(OutputType.minimal);
     String text = json.toJson(person, Object.class);
     System.out.println(json.prettyPrint(text));
     Object person2 = json.fromJson(Object.class, text);
-    
+```
+```json
     {
     class: com.example.Person,
     name: Nate,
@@ -170,19 +192,23 @@ The type passed to `fromJson` is the type of the root of the object graph. From
        }
     ]
     }
+```
 
 To read the JSON as a DOM of maps, arrays, and values, the `JsonReader` class can be used:
 
+```java
     Json json = new Json();
     String text = json.toJson(person, Object.class);
     JsonValue root = new JsonReader().parse(text);
+```
 
 The `JsonValue` describes a JSON object, array, string, float, long, boolean, or null.
 
 ## Customizing serialization
 
 Serialization can be customized by either having the class to be serialized implement the `Json.Serializable` interface, or by registering a `Json.Serializer` with the `Json` instance. This example writes the phone numbers as an object with a single field:
 
+```java
     static public class PhoneNumber implements Json.Serializable {
        private String name;
        private String number;
@@ -202,7 +228,8 @@ Serialization can be customized by either having the class to be serialized impl
     String text = json.prettyPrint(person);
     System.out.println(text);
     Person person2 = json.fromJson(Person.class, text);
-    
+```
+```json
     {
     "name": "Nate",
     "age": 31
@@ -215,11 +242,13 @@ Serialization can be customized by either having the class to be serialized impl
        }
     ]
     }
+```
 
 In the `Json.Serializable` interface methods, the `Json` instance is given. It has many methods to read and write data to the JSON. When using `Json.Serializable`, the surrounding JSON object is handled automatically in the `write` method. This is why the `read` method always receives a `JsonMap`.
 
 `Json.Serializer` provides more control over what is output, requiring `writeObjectStart` and `writeObjectEnd` to be called to achieve the same effect. A JSON array or a simple value could be output instead of an object. `Json.Serializer` also allows the object creation to be customized.
 
+```java
     Json json = new Json();
     json.setSerializer(PhoneNumber.class, new Json.Serializer<PhoneNumber>() {
        public void write (Json json, PhoneNumber number, Class knownType) {
@@ -239,6 +268,7 @@ In the `Json.Serializable` interface methods, the `Json` instance is given. It h
     String text = json.prettyPrint(person);
     System.out.println(text);
     Person person2 = json.fromJson(Person.class, text);
+```
 
 ## Event based parsing