Java

Java ProgrammerAdvanced FeaturesReflection, generics, annotation characters, auto-boxing and unpacking, enumeration classes, mutableparameters, variable return type, enhanced loop, static importCore programmingIO, multi-threading, entity

An advantage of an anonymous class is that it provides easy access to external local variables.The premise is that the external local variables need to be declared final. (JDK7 will not be needed later)======================Synchronization Method 1:

Understanding of the Java Virtual machine stackThe virtual machine stack is the stack memory we know, and the stack memory is unique to the thread. The reference type stored in the local variable table in the stack memory is simply the memory

On this issue,Analysis reason: It should be the chrome to the server to pull resources, the filter intercepted the request, failed to obtain resources, resulting in the above mentioned more bizarre error.Filter is able to intercept all requests: CSS,

Multithreading and concurrency issues are an essential part of any Java interview.1) There are now three threads: T1, T2, and T3. How do you ensure that the T2 is executed after the T1 is complete and T3 executed after the T2 is complete?This

20172320 2017-2018-2 "Java program design" Eighth Week study summary textbook study summary1, binding in most cases occurs in the compilation phase2. Deferred request events become post-bound or dynamically bound, and post-binding efficiency is

This main record (handling) is the understanding of some common concepts in Java, the following The difference between final, finally, finalize Java's interpretation of the value of a pass or reference overriding override and

Study No. 20165324 "Java program design" Nineth Week study summary textbook Learning content Summary 13th Chapter Java Network ProgrammingURL class An application that uses a URL to create an object is called a client A URL object

20165209 2017-2018-2 "Java program Design" 9th Week study summary textbook learning content Summary URL class ULR objects typically contain the most basic three-part information: protocols, addresses, and resources. Construction

2017-2018-2 20165325 Experiment Report of Java object-oriented programmingFirst, agile development and XP practice-1 Experimental requirements: Use the tool (Code->reformate code) in idea to reformat the code below, and then look at the

There is such a requirement that the usernamepassword,password of the front-end login must be encrypted. But not to use MD5, because the background to detect the complexity of password, then in the premise of ensuring security password into the

Here are a few ways to round decimal values to integers: Math.ceil (), Math.floor (), and Math.Round (). These three methods follow the following rounding rules: math.ceil () performs an upward rounding, that is, it always rounds the value up to the

20165318 2017-2018-2 "Java Programming" Eighth Week study summaryDirectory Problems encountered in learning process and summary Summary of learning contents of textbook The 12th Chapter Java multithreading mechanism

Tag: Is the CER object type call error arraylist conversion extend compilerToday will be effective Java (second edition) in the generic part of the reading, deep understanding of their own generic mastery of how unskilled, or need more practice.Say

Java Exception handling mechanism introductionExceptions are exceptions, which are errors that occur during a program's run, and handling these exceptions becomes exception handling. Some languages judge whether a program has an exception by its

Concurrency Concepts: concurrency (Concurrency) and parallelism (Parallelism)Concurrency is biased toward multiple tasks alternating, and multiple tasks may be sequential. And parallelism is the true "simultaneous execution" of the meaning. In

Array sortingDirectoryOne. Bubble sortTwo. Select sortThree. Optimize selection sortingone. Bubble sortExample of an array element as "small to large"Idea: Compare the nearest two elements in turn, place the maximum value at the end of the array,

Recently was on the ground successively asked several times HashMap realization, the answer is not good, intends to review the JDK in the collection framework, and try to analyze its source code, so on the one hand, these classes are very practical,

JadamJava Advanced Chapter (ii)--network communicationNetwork programming is a core part of every developer's tool, and after learning a lot of Java knowledge, we will step into a few big directions, and Java Network programming is one of them.Today,

First, the last three test cases are submitted through theSecond, study the learning StringBuffer in the way of TDD, submit the unit test case and test passThird, using [WHITESTARUML] to model the code in the experiment two, the Hair class diagram