Java Basics (i)

• Basic features: encapsulation, inheritance, polymorphism
• Some new features:
1. Static Import: Import static package name
2. Functions with variable parameters: Add (int ... x)
3. Enhanced for loop: for (int x:xs)
4. Automatic unpacking: Basic type, Class object (uniqueness), Int–>integer
• Enum Type:
1. Generic enum type: Public enum name {,,,,}
2. Advanced enumeration types: Each enumeration type can be followed by a corresponding method
• Reflection:
• There are three ways to get class:
1. By object: GetClass ()
2. By class: Class name. class
3. By class Keyword: Class.forName (package name)
• Reflection Type:
1. Construction Method Reflection
2. Member Field Reflection
3. Member method Reflection: Static Master Method and general method
4. Array Reflection
• Main methods
1. Isprimitive ()//is a basic type
2. IsArray ()//is an array type
3. Invoke (object, parameter)//general and the following methods used in conjunction with the main method of reflection method
4. GetMethod (method name, parameter type)//method reflected by the Member method
• Callout: @ Callout keyword
• Generics: (This thought is important)
• Class loader: Class name. Class.getclassloader ()
• Dynamic Agent
• MyEclipse configuration is based on the workspace, if you want to configure the cracked 64-bit myeclipse,jdk to install the 32-bit

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Java Basics (i)