hfm consolidation

. Configuring the JDKThe full version of the system comes with OPENJDK and is replaced with Oracle's JDKFirst, the OpenJDK uninstall#查找带有openjdk的安装项目rpm-qa | grep java# Delete rpm-e--nodeps by name xxxxxDownload the Linux version jdk to the/home directory and pass the tar--xzvf jdk-xxxx.tar.gz/jdk1.8.0Vi/etc/profileand add the following content,Export Java_home=/home/jdk1.8.0export classpath=.: $JAVA _home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar: $JAVA _home/lib /tools.jarexport path= $PATH: $JAV

certainly affect performance.However, there are special cases:public static void Main (string[] args) {//(1) String S1 = "Hello"; String s2 = "world!"; String s3 = s1 + s2; System.out.println (S3); Output:hello world!//(2) String s = "Hello" + "world!"; /(3) StringBuffer sb = new StringBuffer ("Hello"); Sb.append ("world!");}in these three cases, sort by speed: (2) > (3) > (1), which is a feature of the JVM, when the concatenation of the string object is interpreted as a concatenation of the St

1#include 2 using namespacestd;3 #defineSwap (b) {a^= B; b^=a; a^=b;}//You can also define macros like this4 5 voidRightShift (int*array,intNintM)6 {7 intI, J;8 if(m>0 m!=n)//M==0 | | Do not cycle right when m==n9 {Ten for(i=0, j=n-1; i ) One swap (array[i],array[j]); A - for(i=0, j=m-1; i ) - swap (array[i],array[j]); the - for(I=m, j=n-1; i ) - swap (array[i],array[j]); - } + } - + intMain () A { at intN, M; - while(cin>>n>>M) -

First, learn the VIM native shortcut keys and related commands before adding plugins. (When used to record, temporarily will be chaotic, irregular sorting)Ps:ctrl+s means stop output to terminal; The ctrl+q resumes to the terminal output stream. Using various shortcut keys may be mistakenly pressed to ctrl+s, when the button window is unresponsive, using ctrl+q recovery. Vim Auto Completion:Vi/vim Use advanced: Auto-complete (ctrl+x CTRL + Phase key, personal feeling mainly used: n the cur

destroy data // // // public void Setbasepara (int life_base = 1, float autodeadtime_base =-1) { m_autodeadtime = M_autodeadtime_base = Autodeadtime_base; NBSP m_life = M_life_base = life_base; } //whether NBSP is enabled; public bool Isuse {get; set;} //post-death position public Vector3 deathposition { get { return New Vector3 (2000, 2000, } } //Resurrection public void Init (Vector3 position, quaternion rotation) { transform.gameObject.SetActi

To facilitate rapid development projects, I intend to integrate the Django and bootstrap frameworks together, and here is the consolidation process.Environment:Python version: 2.7.8Django Version: 1.7.1Bootstrap version: 3.3.0First GitHub has two open source projects to consolidate Django and bootstrap.Https://github.com/dyve/django-bootstrap-toolkit corresponds to the bootstrap 2.0 version.HTTPS://GITHUB.COM/DYVE/DJANGO-BOOTSTRAP3 corresponds to the

password change:0Maximum number of days between password change:90Number of days of warning before password expires:7 View the Oracle password has been found to have expired time. The workaround is set to never expire or modify the password of the Oracle user. To further verify the problem, try to discover the problem resolution by setting the never expired attempt: [Root@irora11 ~]# chage-m 99999 Oracle[Root@irora11 ~]# Su-oracle[Oracle@irora11 ~]$ Crontab-l0 3,7,11,15,19,23 * * */home/oracl

The day before yesterday solved the integration of spring and hibernateWhen I was full of confidence, I began to do spring and Struts2 integration, I wrote an action and Web page, the browser run action when actually error, The original is I web. XML did not increase the STRUTS2 information, increase or error, the original does not increase the time, you can also visit index.jsp, increase the later can not, spent my nearly two days, the afternoon asked the Li Xia, the results he did not find out

PackageCom.orm.servlet; Importjava.io.IOException; ImportJava.io.PrintWriter; Importjava.util.List; ImportJavax.servlet.ServletConfig; Importjavax.servlet.ServletException; ImportJavax.servlet.http.HttpServlet; Importjavax.servlet.http.HttpServletRequest; ImportJavax.servlet.http.HttpServletResponse; ImportOrg.springframework.context.ApplicationContext; Importorg.springframework.web.context.support.WebApplicationContextUtils; Public class testservlet extends httpservlet { PrivateStaticFina

For arrays, we can print out all of the objects by reflection:Package Com.test;import Java.lang.reflect.array;import Java.lang.reflect.field;public class ReflectTest {public static void Main (String []args) throws exception{int[] A=new int[]{1,2,3,4};p rintobject (a);} private static void PrintObject (Object obj) {Class clazz = Obj.getclass (); if (Clazz.isarray ()) {int len = array.getlength (o BJ); for (int i =0;iJava Foundation Consolidation Series

To use reflection, you first need to get the class object for the Class class object. A Field object corresponds to the attribute (member variable) information of a reflection classThere is a method in this field.setaccessible (Boolean b), this method is very important, there is a comment in the code, is used to improve the speed of Java reflection.First, we need to define a javabean that the bean uses as our reflection class:we then write a concrete reflection method in main:Note that the Setac

Mail-1.4.7.jar Send mail jar package Activation-1.1.jar JavaMail related jar package, use javamail should join with Mail.jar to the LibMysql-connector-java-5.1.45-bin.jar get the jar package for the database connectionCommons-dbutils-1.6.jar let JDBC quickly manipulate the jar package for the databaseCommons-pool-1.5.4.jar Commons-dbcp-1.4.jar Get the jar package for the database connection poolJstl-1.2.jar Jstl jar PackageUsed JAR Package Consolidation