java programmer resume

head bald, I hope you have hair after 5 years.Salary Gradient:The world is your??。 Let our red-dust company, stay up overtime?? (The slip of the tongue, let us be companions, for Love and Dream)Gender ratio:The small sister contributed to the world, to contribute to the work and the motherland. Love, and the keyboard on the line.Their education is concentrated in:College, undergraduate Army almost male bully Java world, master friends with the love o

automatically calls the constructor with no arguments + Example: A Abstract classPerson { at //defines an abstract class that must be inherited - - -Person () {//This constructor can also be non-writable, and Java will add a constructor without parameters by default - - in } - } to + Public classStudentextendsPerson { - the * Student () { $ Panax Notoginseng //super ();//can not write, Java will ca

A good Java programmer tool: json-to-javabean, I will introduce a developed tool, json-to-java. It can help java programmers to generate corresponding javabean through json. This tool is particularly useful when you need to call APIs in json return format.Features The java

important.See the polymorphism of so many benefits, is not feel very strong appearance, let us look at polymorphism in the code of the rendering Way (a piece of God around the code, we watch, at night): Public classStua { Public voidsay (StuD Stu) {System.out.println ("D say Hello"); } Public voidsay (Stua Stu) {System.out.println ("A say Hello"); }} Public classStuBextendsStua { Public voidsay (Stua Stu) {System.out.println ("A say Hello"); } Public voidsay (StuD Stu) {System.out.print

. Identifiers are case-sensitiveExamples of legal identifiers: Age, $salary, _value, __1_valueExamples of illegal identifiers: 123abc,-salary to make the code more normalized, it is recommended that you follow these naming conventions: 1. All letters are lowercase, for example: Com.java.one. 2. Class name and interface name each word should be capitalized, for example: Arraylist, Iterator. 3. Constant name All letters are capitalized, the words are underlined, for example: Kay_one_honm. 4. The f

exits before executing it. System.exit (0);Finalize: Is a method in the object class.It is the way that the garbage collector is called.: If there is a return statement in the catch, will the code in the finally execute?Is it before the return, or after the return?The code in the finally is executed before the return.The difference between throws and throwA: There can be no throw when there is throws.When there is a throw, if the exception of throw throws is the exception system, then there mus

intercept eight bits). As a result, the message is that the Java byte stream reads byte into int and then goes back to byte to save it. Why not?After some thought, I had an initial answer: When reading a byte data with the input stream, there are sometimes 8 consecutive 1 cases, which represents-1 within the computer, exactly matching the flow end tag. Therefore, in order to avoid the flow operation data to end prematurely, the read bytes are extende

need to lay the foundation, the IDE select one to understand.2. Study the idea of Java programming"Thinking in Java" This book is the Great God highly recommended books, since the great God recommended, we might as well study it.It does not guarantee that you are out of the new ranks, but will lead you to the path of master.3. Learning: HTML, CSS, JavaScript, JQuery, BootstrapIn addition to learning

identifier: It is in our Java program that we have customized some of the program-related meaningful names, it is defined by 26 uppercase and lowercase letters, numbers 0-9 and "$" and "_" composition; definition rule: 1, number can not start 2, no keywords can be used name Definition specification : 1, Package Name: All letters are lowercase when multiple words are composed, with "." In the middle. Separa

classification of unit tests that I understand2. Benefits of implementing Unit tests3. Java Programmer Unit Testing Tool Librarydefinition and classification of unit testsThe definition of unit tests refers to the code that programmers write to test the logic code. In my understanding, unit tests are divided into the following two categories:Code TestingCode testing refers to the implementation of the code

classification of unit tests that I understand2. Benefits of implementing Unit tests3. Java Programmer Unit Testing Tool Librarydefinition and classification of unit testsThe definition of unit tests refers to the code that programmers write to test the logic code. In my understanding, unit tests are divided into the following two categories:Code TestingCode testing refers to the implementation of the code

source and purpose.Source: input stream. InputStream ReaderPurpose: The output stream. OutputStream Writer2. Whether the manipulated data is plain text.Yes: Character streamNo: Byte stream3. When the system is clear, then specify which specific object to use. To differentiate by device:SOURCE device: Memory, hard disk, keyboardPurpose device: Memory, HDD, consoleHere's a simple practice code:public class Inputstreamreaderdemo {public static void Main (string[] args) throws IOException {

.getmessage ()); } } public static void Main (string[] args) {object 1.method3 ();//The above Exception1 and Exception2 exceptions will not appear again! }　　3. How do I manually throw an exception?Inside the method, you can use the Throw + Exception class object to manually throw an exception!Compares the size of a radius of two circles. public int compareTo (Object obj) throws exception{if (this = = obj) {return 0;} else if (obj instanceof circle) {Circle c = (circle) obj;if (This.ra

-dimensional array are initialized.To familiarize ourselves with the two-dimensional array, we also iterate through all the elements like a one-dimensional array.The specific code is as follows:1 Static voidPrintarr ()2 {3 int[] arr={{1,2,3,4},{5,6,7},{8,9},{10}};4 for(inti=0;i)5 {6 for(intj=0;j//Double loop traversal of two-dimensional arrays7 {8System.out.print ("arr[" +i+ "[" +j+ "] =" +arr[i][j]+ "\ T");9 }TenSystem.out.printl

to the contract, for the caller, as long as the reference to the parent class is used , all the different kinds of common energy implemented by all concrete subclasses, the abstract methods in the parent class, the callerYou do not need to know the implementation details in the subclass method.3) However, if you stand in the perspective of a specific subclass (using a reference to a specific subclass type), then there is less flexibility because a subclass reference of a particular type can onl

The following content is the original Java surface of the online question set and the answer after a comprehensive revision of the responsible questions and answers, the original topic has a lot of repetitive topics and worthless topics, there are many reference answers is also wrong, modified Java surface Test set reference the latest version of the JDK, removed the EJB 2.x and other useless content, suppl

is random.What's the difference between HashMap and Hashtable?Hastmap is an interface that is a sub-interface of the map interface, an object that maps keys to values, where the keys and values are objects and cannot contain duplicate keys, but can contain duplicate values. HashMap allows null key and null value, while Hashtable is not allowed.HashMap is a lightweight implementation of Hashtable (non-thread-safe implementation).Constructors are not overridden in

mechanism, synchronization includes: Synchronous code block, synchronization function.3. When using synchronous code blocks, the following questions need to be clarified:1) make clear what code is multithreaded running code (the code in the Run method);2) clear sharing of data;3) Clear the multi-threaded running code which is the operation of shared data;4, lazy-type synchronization problemLazy examples are lazy-loaded, and there are multiple action statements that may cause security problems i

This article is selected from the Java programmer, the work of the thingSometimes if you apply to a company with a foreign background or a lot of people in this company have a background in overseas or foreign work, youPerhaps it will also use some vocabulary in the daily work exchange.For example, we have a look at the meeting of a supervisor to speak: Xiao Wang, please "Push" the matter as soon as possibl

meet the conditions.The Do...while loop is similar to the while loop, but the Do...while loop executes at least once.do { //code statement}while (boolean expression);Example: Calculate the result of a 1+2+3+4......+100.public class Control5{public static void Main (string[] args) {int a=1,result=0;do{result+=a++;} while (aOutput Result:5050　　Note: in fact, in the actual program development, Do/while loop statements are not often used. Because this statement is the first to perform the cyc