java inner class example

Simply put, packing is to convert the value type to the reference type, and unpacking is to convert the reference type to the value type.In fact, there is nothing to say about this. You can see it in the Code:Java code/*** @ Author hellosure* @ Time 2011-7-27 8:10:46 a.m.* @ Description: Example of packing and unpacking*/Public class Test {Public static void main (String arg []) {Int v1 = 100;Int v2 = 100;/

blockE.printstacktrace (); } catch(IOException e) {//TODO auto-generated catch blockE.printstacktrace (); } } }; Service.execute (run); }//block HTTP call private static voidSendrequestasync (String event,string username) throwsInterruptedexception, IOException {requestconfig requestconfig =Requestconfig.custom (). SetSocketTimeout (+)//HTTP timeout. Setconnecttimeout (+). Build (); Connection Timeout Closeablehttpasyncclient httpclient =Httpasyncclients.custom (). Setdefaultrequestconfig (Requ

ImportJava.text.DateFormat;Importjava.text.ParseException;ImportJava.text.SimpleDateFormat;ImportJava.util.Calendar;Importjava.util.Date;ImportJava.util.GregorianCalendar;ImportJava.util.Scanner;/*** Visual Calendar program **/ Public classVisualcalendar { Public Static voidMain (string[] args) {System.out.println ("Please enter a date (by format: 2015-08-17):"); Scanner Scanner=NewScanner (system.in); String Temp=Scanner.nextline (); //String temp = "2015-8-17";DateFormat format =NewSimpleDateF

Copy Code code as follows: Package Com.yao; Import Java.util.concurrent.ExecutorService;Import java.util.concurrent.Executors;Import Java.util.concurrent.Semaphore; /*** Java 5.0 adds 4 synchronization devices that coordinate the process between threads, respectively:* Semaphore, Countdownlatch, Cyclicbarrier and exchanger.* This example mainly introduces semaphore.* Semaphore is a tool used to m

a local inner class cannot use the non-final local variable of the method in which the inner class is located-----Explain the existence life cycle lengthAnonymous inner class: There is no name of the

Import Java.util.concurrent.countdownlatch;import Org.apache.http.httpresponse;import Org.apache.http.client.config.requestconfig;import Org.apache.http.client.methods.httpget;import Org.apache.http.concurrent.futurecallback;import org.apache.http.impl.nio.client.CloseableHttpAsyncClient; Import org.apache.http.impl.nio.client.HttpAsyncClients; public class Asyncclienthttpexchangefuturecallback {public static void main (final string[] args) thr

Import java.io.*; public class Filereadersample {public static void main (String args[]) throws IOException {//Create an array that can hold 1024 characters Char Data[]=new char[1024]; Establish object Fr FileReader fr=new filereader ("C://java//donkey.txt"); Read the data into the character list, int num=fr.read (data); Converts a list of characters to a string Str=new string (data,0,num); Outp

;public class Anonymouseinnerclass{@SuppressWarnings ("deprecation")Public String getDate (date date){return date.tolocalestring ();}public static void Main (string[] args){Anonymouseinnerclass test = new Anonymouseinnerclass ();Print Date:String str = test.getdate (new Date ());System.out.println (str);System.out.println ("----------------");Using anonymous inner classesString str2 = test.getdate (New Date

The function of the inner class:1, hide the internal realization, high cohesion.2, Java Multi-inheritance implementation.What is the multiple inheritance of Java?Java only supports single inheritance, so if multiple inheritance is required, then internal classes can be imple

= "Imooc"; //member properties for external classes intAge = 20; //member Inner class inner Public classInner {String name= "Adoration Class"; //methods in the inner class Public voidShow () {System.out.println ("N

Such as:public class innerclassdemo{int x;Class a{static int a = 0;//is not legal to write this way.static final int b=0;//It's legal to write this.}}Java class loading order, first load the class, execute the static variable initialization, and then execute the object creat

Inner classA class defined inside a class, inside a method, or inside a local code block(1) Non-static inner classClass A {Class Inner {}}A = new A ();A.inner Inner = A.new

Below through the example code to share with you about the Java internal classes of inheritance, specific details are as follows: The constructor of the Java inner class must be connected to a reference to its Outer class object

One common sense before Java 8 is that if you want to define an anonymous inner class in a method and use local variables (including parameters) within that method, you need to use the final keyword modification. There are many interpretations and explanations of this mechanism on the Internet, but most of them are an abstract understanding. If you can analyze th

directly reference the variable I in the outer class, or you can assign it directly, such as i=5, and so on. However, in an external class, you cannot directly refer to a member variable in an inner class. For example, in an external cl