scjp java 8

Program Flow control:Sequential structure: Execute from top to bottom;Branch structure: if-else,switch-case;650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/74/DA/wKioL1YsmQninvh0AAC_BI9hpYA686.jpg "title=" 3.png " alt= "Wkiol1ysmqninvh0aac_bi9hpya686.jpg"/>650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/74/DA/wKioL1Ysn4OiUfteAAFTCQRCDNU041.jpg "title=" 9.png " alt= "Wkiol1ysn4oiufteaaftcqrcdnu041.jpg"/>Loop structure: While, Do-while, for, foreachBasic

Sometimes see the interesting demo, in the Headache Import Project code and workspace encoding is not the same when I try to open a notebook Class A class of replication,Demo of the analogy is less can endure, the class of the demo when more than just rely on the other way today to find the imitation iOS style demo when really can not stand garbled, Sina a search, appear to force the tool class general idea quite simple is to find the path re-transcoding. Thank the author, respect the original.H

Bubble Sort: http://blog.csdn.net/pzhtpf/article/details/75602941 Public classBubblesort {2 PublicBubblesort () {3 inta[]={49,38,65,97,76,13,27,49,78,34,12,64,5,4,62,99,98,54,56,17,18,23,34,15,35,25,53,51}; 4 intTemp=0; 5 for(inti=0;i){ 6 for(intj=0;j){ 7 if(a[j]>a[j+1]){ 8temp=A[j]; 9A[j]=a[j+1]; Tena[j+1]=temp; One } A } - } - for(inti=0;i) the System.out.println (A[i]); - } -}Programmers must know

This section review Java Common I/O, input and output streams.First put the sample code, convenient reference, can be easily read. PackageRe08;ImportJava.io.*;ImportJava.util.Scanner; Public classIotest { Public Static voidMain (string[] args) {File file=NewFile ("D:/1.txt");//File Creation if(File.exists ()) {file.delete (); } Else { Try{file.createnewfile (); } Catch(IOException e) {e.printstacktrace (); } } Try{FileO

the data is stored in the type of object, then you need to do a type conversion returntype.cast (Data.get (type)); } Public Static voidMain (string[] args) {Manytypeclass MTC=NewManytypeclass (); Mtc.putdata (String.class, "Cutter_point"); Mtc.putdata (Integer.class, 0XCAB145DE); Mtc.putdata (Class.class, Manytypeclass.class); Mtc.putdata (Manytypeclass.class, MTC); String datastring= Mtc.getdate (String.class); intDatainteger = Mtc.getdate (Integer.class); Classclass); Manytypec

Think in Java (8): Holding object, thinkjava1. Differences between various mapsHashMap: Does not store its elements in any obvious Order (same as HashSet)TreeMap: stores keys in ascending order of comparison results (same as TreeSet)LinkedHashMap: stores keys in the insert Order (same as LinkedHashSet)2. ListIterator is a more powerful sub-type of Iterator. Iterator can only move forward, but ListIterator c

Abstract classes are often used to characterize the abstract concepts we derive in the analysis and design of the problem domain, as an abstraction of a series of concrete concepts that look different, but are essentially the same, and we cannot instantiate them (not get a concrete one) so they are called abstractions. For example: We want to describe "fruit", it is an abstraction, it has quality, volume and other common (fruit quality), but also lack of characteristics (apples, oranges are frui

importjava.awt.gridlayout;importjava.awt.menu;importjava.awt.menubar;import Java.awt.menuitem;importjava.awt.event.actionevent;importjava.awt.event.actionlistener;import java.awt.event.WindowAdapter;importjava.awt.event.WindowEvent;importjavax.swing.JButton; importjavax.swing.jframe;publicclasstest{publicstaticvoidmain ( String[]args) {finaljframetest=newjframe (); Test.setlayout (NewGridLayout (3,2 ); Finalmenumenu=newmenu ("file"); Menubarmenubar=newmenubar ();finalmenuitemmenu1=new MenuItem (

public class MethodReferenceDemo1 {@FunctionalInterfaceInterface Stringlistformatter {string format (String delimiter, list}public static void Formatandprint (Stringlistformatter formatter, String delimiter, listString formatted = Formatter.format (delimiter, list);SYSTEM.OUT.PRINTLN (formatted);}public static void Main (string[] args) {listFormatandprint (String::join, ",", names);}}Using the Java 8 API, c

);Content.setcode (GetValue (one));Hssfcelltwo = Hssfrow.getcell (1);Content.setname (GetValue ());List.add (content);}}returnlist;}/** * get The values in the Excel table*/Privatestring GetValue (Hssfcell Hssfcell) {if (hssfcell.getcelltype () = = Hssfcell.cell_type_boolean) { // returns the value of a Boolean typeReturnstring.valueof (Hssfcell.getbooleancellvalue ());}else if (hssfcell.getcelltype () = = Hssfcell.cell_type_numeric) { // returns the value of a numeric typeReturnstring.valueof

() {System.out.println ("OK");}3, the annotations are divided into two categories:1) meta-Annotations for configuration annotations(1) Enum type Elementtype:type (type declaration), Annotation_type (annotation type declaration), package (packet Declaration), CONSTRUCTOR (constructor Declaration), field (domain declaration), method (methods Declaration) , PARAMETER (method parameter declaration), local_variable (local variable declaration), where each type represents the usage scope of this anno

Java Concurrency Programming: the use of auxiliary classes under the concurrent packageOrganized by: Blog Park-Haizi-http://www.cnblogs.com/dolphin0520/p/3920397.html1. Countdownlatch Usage:The thread that calls await () waits until count reaches 0, and count cannot be reused.1.1. Construction and Method:Countdownlatch (intView Code1.2. Example:2. Cyclicbarrier Usage: Loopback fence, function as above, let a group of threads wait for a state (barrier

()); } System.out.println ("---------------------JAVA8------------------------------"); Map.entryset (). iterator (). foreachremaining (Item-System.out.println ("key:value=" + item.getkey () + ":" +Item.getvalue ())); } /*** Traverse Map Third * Traverse key and value via Map.entryset, recommended for large capacity*/@Test Public voidTestergodicwaythree () {System.out.println ("---------------------before JAVA8------------------------------"); for(Map.entryEntry:map.entrySet ()) {System.out

1. Polymorphism OverviewPolymorphism does what and how by separating , separating the interface from the implementation from another angle . Polymorphism not only improves the organization and readability of code, it also creates extensible programs---programs that can "grow" whenever a project is initially created or when new functionality is needed.　　Encapsulation Creates a new data type by merging features and behaviors . "Implementation concealment " separates the interface and implementatio

In the following example, we'll show you how to use the Java 8 LAMBDA expression to write a comparator that sorts the list collection. 1. Classic Comparator example. comparator 2. LAMBDA expression equivalent. Comparator 1. Do not use the LAMBDA to achieve sorting The example demonstrates the ability to sort the age property with a Developer object. Normally, you would use Collections.sort to implement

New features in Java 8Java 8 (also known as JDK 1.8) is a major version of Java language development. Oracle Corporation released Java 8 on March 18, 2014, which supports functional programming, new JavaScript engines, new date APIs, new stream APIs, and more. New feat

Install Java 8 on centos This article describes how to install and update java8.1. Reading Guide After a long wait, Java SE Development Kit 8 can finally be downloaded. JDK8 integrates many enhanced features and is officially released on July 8, March 18, 2014. You can find

New Features of Java 8-New Features of languages 1. Lambda expressions and functional interfacesIt allows us to pass functions as parameters to a method, or treat code as data processing: function developers are very familiar with these concepts. Many languages on the JVM platform (Groovy, Scala, and so on) Support Lambda expressions since their birth. However, Java