log debug java

(file read and write to the Employee class object) Import Java.io.fileoutputstream;import Java.io.ioexception;import Java.io.objectoutputstream;import Java.util.ArrayList; public class Serializemain {/** * @author ZYP */public static void main (string[] args) {Employee emp = new Employe E (); Emp.setemployeeid (101); Emp.setemployeename ("Zyp Zhang Yanpeng"); Emp.setdepartment ("Com.CS"); Employee EMP2 = new Employee (); Emp2.setemployeeid (102); Emp2.setemployeename ("Xqz Xu Qin"); E

specific class)Center left: Source code bottom Left: Console//ImportantTop right: The process of changing variables. Very important4. How to perform the next step.F6: Progressive Debug F5: Step-by-step debugging5. After the debugging is finished, remove the breakpoint.Upper right--points---double X (break points)Finally, we will give you some exercises:Practice One:Print all the even numbers between 1-100 with a for loop.Use the For loop to print all

quick fix error.Figure 1.8 The Quick fix prompt box available3. Markup in the upper-right corner of the editor windowIts role is to prompt the developer that there is an error somewhere in the document, move the mouse over the icon, and the number of specific errors will be displayed, as shown in 1.9.Figure 1.9 shows the number of specific errors4. Markup on the right side of the editor windowIn the blank position on the right side of the editor, you can see one or more red rectangles that indi

console ### Log4j.appender.stdout = Org.apache.log 4j. Consoleappender Log4j.appender.stdout.Target = System.out Log4j.appender.stdout.layout = Org.apache.log4j.PatternLayout Log4j.appender.stdout.layout.ConversionPattern =%d{absolute}%5p%c{1}:%l-%m%n ### output To log file ### LOG4J.APPENDER.D = Org.apache.log4j.DailyRollingFileAppender Log4j.appender.d.file = Logs/log.log Log4j.appender.d.append = true # # Output

(" Michael "," Neward ",), new Person ("Matthew", "Neward",) }; for (person p:people) { System.out.println (p);}}} 2, Breakpoint set: 2.1 hit a breakpoint inside the for loop, then right click on the breakpoint, click on the bottom of the pop-up "Breakpoint Properties" 2.2 as shown in the following figure, select Conditional, when the default suspend when True the radio button is selected, that is, when the condition is true, the breakpoint will stop 2.3 In the bottom of the bla

) Org.apache.log4j.PatternLayout (flexibility to specify layout mode) Org.apache.log4j.SimpleLayout (level with log information and information Strings) Org.apache.log4j.TTCCLayout (contains information about the time, thread, category, etc.) of the logLayout also has configuration items, the following detailsHtmllayoutLocationinfo=true: Output Java file name and line number, default Falsetitle=my Logging:

1. Create a Java projectSuch as: Package Remoteproject; Public class Main { publicstaticvoid main (string[] args) { // TODO Auto -generated method Stub System.out.println ("Remote test peoject!!!"　　　); }}--------------------------------------------------------------------------------------------------------2,export Runnable Jar Project--------------------------------------------------------------------------------------------------------3, se

Com.mai.test;import Org.apache.log4j.logger;import Org.apache.log4j.propertyconfigurator;public class log4jtest {public static void main (string[] args) {Logger log = Logger.getlogger (Log4jtest.class); Propertyconfigurator.configure ("Src/log4j.properties"), Log.debug ("Yes,debug"), Log.info ("Yes,info"); Log.error (" Yes,error "); Log.warn (" Yes,warn ");}}2. Gclogviewer–

All along, you want to read the source code of some Java open source projects, and even want to modify some of the code to achieve the open source project for two times the purpose of development. But always do not know where to start, directly to the source project source code into eclipse, will always report many errors, and can not compile. can open the source code of open source project directly through eclipse, can at least reach the goal of Visu

the magical skills. 26th Chapter Visitor Mode explanation + source parsingThe visitor pattern is very low in the actual work, but in order to study the completeness, the visitor pattern definition, the use scene, the merits and demerits and so on to explain, directly gives the case code to explain, finally and the visitor pattern in the frame source application carries on the analysis, lets everybody appreciate the visitor pattern the magical skill. ... 27th Chapter State Mode explanation +

This article is my record debugging Java program error, every encounter will update!error 1. HTTP Status 405-http method GET is not supported by this URLWorkaround: Delete super.doget (request, response); error 2. HTTP Status 404-/simple/getaddress --------------------------------------------------------------------------------Type Status reportmessage/simple/getaddressDescription The requested resource (/simple/getaddress) is not available. ---

When Eclipse starts Tomcat in debug mode, a memory overflow exception occurs when you modify a Java class or paging file, and you must restart Tomcat after each modification to be normal and to affect development efficiency. Later, the check was found under servers/tomcatv5.5 server at Localhost-config/server.xml in Eclipse. Reloadable= "true" in the Context tab, it is normal to change it to false. Find sol

Java: Remote Debug and javadebugJava remote debugging -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,address=5005,suspend=n Note: -Enable debugging in XDebug.-Disable the default sun. tools. debug Debugger for Xnoagent. If the agent is disabled, the Attach method cannot be used for remote connection debugging. Therefore, this option

1. Description of the problem:JSP pages often have form elements, sometimes need to use the file upload tag in the 2.debug Process:test.jspbecause the file upload function is implemented, the form must be encapsulated as "multipart/form-data" so that the contents of the entire form become binary form down-routing -formAction= "receive.jsp"Method= "POST"enctype= "Multipart/form-data"> inputname= "ModelName"type= "text"> inputtype=

Original address: http://www.cnblogs.com/leocook/p/log_java.htmlThe following 4 types of log management schemes are common in Java development:1. commons-logging + log4j2. log4j3. slf4j + log4j + commmons-logging4. slf4j + log4jOriginal address: http://www.cnblogs.com/leocook/p/log_java.html1, log4j Overview Log4j is an open source project for Apache, mainly used to do the

to debug the way the product user experience is poor, and some problems due to the occasional, the environment is very complex and other reasons difficult to re-trigger.Conversely, if the log level is initially adjusted to low, then there will be a lot of useless information in the middle of the log, and when the product is more complex, it will result in large

(){return this.item;}public void setpid (int pid){This.pid=pid;}public int Getpid (){return this.pid;}public void SetName (String name){This.name=name;}Public String SetName (){return this.name;}public void Setprice (double price) {This.price=price;}Public double GetPrice () {return this.price;}Public String GetInfo () {Return "commodity" +this.pid+this.name+this.price;}}public class Pctestse{public static void Main (String args[]){Item Item=new Item (1, "kitchen Utensils", "1");Subitem Suba=ne