Java中应用的的设计模式 - 创建模式

Creational patterns

Abstract factory?(recognizeable by creational methods returning an abstract/interface type)

• java.util.Calendar#getInstance()
• java.util.Arrays#asList()
• java.util.ResourceBundle#getBundle()
• java.net.URL#openConnection()
• java.sql.DriverManager#getConnection()
• java.sql.Connection#createStatement()
• java.sql.Statement#executeQuery()
• java.text.NumberFormat#getInstance()
• java.lang.management.ManagementFactory?(all?getXXX()?methods)
• java.nio.charset.Charset#forName()
• javax.xml.parsers.DocumentBuilderFactory#newInstance()
• javax.xml.transform.TransformerFactory#newInstance()
• javax.xml.xpath.XPathFactory#newInstance()

  Builder?(recognizeable by creational methods returning the instance itself)

  • java.lang.StringBuilder#append()?(unsynchronized)
  • java.lang.StringBuffer#append()?(synchronized)
  • java.nio.ByteBuffer#put()?(also on?CharBuffer,?ShortBuffer,?IntBuffer,?LongBuffer,FloatBuffer?and?DoubleBuffer)
  • javax.swing.GroupLayout.Group#addComponent()
  • All implementations of?java.lang.Appendable

    Factory method?(recognizeable by creational methods returning a concrete type)

    • java.lang.Object#toString()?(overrideable in all subclasses)
    • java.lang.Class#newInstance()
    • java.lang.Integer#valueOf(String)?(also on?Boolean,?Byte,?Character,?Short,?Long,Float?and?Double)
    • java.lang.Class#forName()
    • java.lang.reflect.Array#newInstance()
    • java.lang.reflect.Constructor#newInstance()

      Prototype?(recognizeable by creational methods returning a?different?instance of itself with the same properties)

      • java.lang.Object#clone()?(the class has to implement?java.lang.Cloneable)

        Singleton?(recognizeable by creational methods returning the?same?instance (usually of itself) everytime)

        • java.lang.Runtime#getRuntime()
        • java.awt.Desktop#getDesktop()