Java

Reference documentsHttp://docs.oracle.com/javase/7/docs/technotes/tools/solaris/jar.htmlHttp://blog.chinaunix.net/uid-692788-id-2681132.htmlFeature Description:Java Archive ToolSyntax:jar [ command options ] [manifest] Destination input-file

"Package"  in order to solve the class naming conflict problem, the Java ingest package mechanism provides the class's multi-class namespace.package as the first statement of the source file (specified by default as the unnamed package), the package

The previous article introduced a design pattern of the responsibility chain model, this chapter for you about the design pattern of the single-case pattern and template method mode. The role of the singleton mode is to ensure that an instance of

1. Identifiers are used to identify the names of variables, constants, methods, classes, or interfaces. (The place where you need to name yourself is called a marker!!) ）Can only be made up of numbers, letters, _, or $Must be preceded by a letter, _,

"Common class" string-related classes (string, StringBuffer) Basic Data type wrapper classmath classfile class Enumeration Classes "String Class" the java.lang.string class represents the immutable sequence of characters. common construction methods

PackageFileStream;ImportJava.io.FileReader;ImportJava.io.FileWriter;Importjava.io.FileNotFoundException;Importjava.io.IOException; Public classCharacterstreamtester { Public Static voidmain (String [] args) {FileReader in=NULL; FileWriter out=NULL;

"Array"  Note: Arrays can be stored in the stack, but not in Java (because they are references in Java).  "One-dimensional array" statement: type var[]; or type[] var;The Java language cannot specify its length (the number of elements in the array)

1. consist of one or more independent classes;2. Up to one public class3. Source code file name must be the same as the class name4. A class consists of one or more methods, where the main () method in the public class acts as the entry for the

1. Features(1) All member variables are public, static, final. (2) All methods are public, abstract. (3) All nested types are public, static.2. The interface is also inherited from object.3. Instantiation of the Interface (pseudo) Public class test2

ConceptThe shorthand for io,input and output, that is, the input outputs, so the IO stream is the output stream of input. The IO stream is equivalent to a data pipeline that is used primarily toPlace data transfer between the devices.principleThe

One, the experience of the collection (Collection, list, set, map)1, the way to traverse the list:First method: For-each methodpublic class listtest{public static void Main (string[] args) {list list = new arraylist ();Long t1,t2;for (int j = 0; J

Refers to a method by which a customer invokes another object through a proxy class, and dynamically creates a proxy object for the target class as needed while the program is running.Dynamic Proxy usage Scenarios: debugging, remote method

Development GUI Program General step: 1, import java.awt.* of introduction package; Import javax.swing.*; 2, inherit JFrame public class Demo3 extends JFrame {} 3, define required components//3. Define Components JButton jb1,jb2,jb3,jb4,jb5; int

One: Shorten the string according to a certain rule/* * Shorten string */public class Dome07 {public static void main (string[] args) {string str = "According to the rules C:\\windows\\resources\\themes \\aero ";" while (true) {System.out.println

Package Cn.jdk.foreach;import Java.util.hashmap;import Java.util.map;public class Foreachtest {public static void main ( String[] args) {int[] arr = {1,2,3};for (int a:arr) {System.out.println (a + "\ T");} System.out.println ("======================

When we declare a generic interface or class, or need a subclass to inherit to this generic class, we want to get these generic parameter information using reflection. This is the reflectionutil to be introduced in this article is to solve this kind

Five JVM command line signs that every Java programmer must know Unfamiliar with the JVM will not only affect the application performance, but it will also be difficult to try to fix problems in the JVM. This article describes some command line

Java architecture decryption-AOP of Spring framework We have been using a lot of AOP frameworks for a long time, but we haven't gotten too deep into the underlying implementation of AOP. In the old saying, "I know it, I don't know why ", with the

Character device interrupt button From the question, we can see that this section is about the driver of character devices, but it is another technique: interruption. This word is no stranger at all. I. Analyze the heavyweight functions of

Chromium kernel resource loading, parsing, and three-Tree Synthesis analysis (chromium39) Every time I try to see the implementation of the specific logic in chromium kernel, I will spend some time to read the code and find the logic. Of course, I