Java

From the book to see the example, oneself did a little expansion, do a look to play.The content is slightly adjusted, summed up a little bit of usage, wrote a few notes, for reference only.Package Swingexample;import Java.awt.color;import

Differences between compare () and CompareTo () methods in the comparable in 1.ComparatorTreeSet collection after the object is created,A: If it is an empty structure, that is treeset ts = new treeset (); , then Ts.add (), when you need to

1. Breakpoint DebuggingA: Positioning (setting breakpoints)B: Start DebuggingC: Stepping through the observation variable (F5 stepping F6 single Step)D: Modify2 static staticsstatic members, shared for all objects of the classIn a static method,

(This content is purely personal summary, if there is inappropriate, welcome readers correct!!)Java Basic Data type:1. Integral typeThe integer data types in Java are decimal, hexadecimal, octal.There is no need to say the decimal, and the C

This method can only be effective within a limited range. It's not balm.Like whatThe image type judgment, the audio file format judgment, the video file format judgment and so on this affirmation is 2 binary and the professional very strong file

1. Call stack: Simply said is a method call in the maintenance program, the more the first execution method is closer to the bottom of the call stack, when a method is executed, it will be removed from the top of the call stack.If a Java program is

This article address: http://www.cnblogs.com/archimedes/p/java-factory-method-pattern.html, reprint please indicate source address. Factory method Mode (alias: Virtual construction) Defines an interface for creating objects, letting

Adapter class Adapter, NULL implementation of an abstract method in an

String A; Declares a string type A, which does not have a memory address in the request, nor any point in memory to the reference address;String a = null; Declare a string of type A, while in memory requested an address, but the address does not

2. Richter Replacement principle:LSP(Liskov Substitution Principle) richter substitution principle, defined as long as the parent class appears where the subclass can appear, and after the subclass is replaced, There is no problem with the program,

Original sync to: http://www.waylau.com/java-comments-conventions/ In the Java writing process we need to comment on some programs, in addition to their own convenience to read, more people understand their own programs, so we need to make some

The edge set of a graph can be transformed into an adjacency matrix.The adjacency matrix is defined as follows:Adjacency matrix (adjacency matrix): A matrix that represents the adjacency between vertices. Set g= (v,e) is a diagram in which V={v1,v2,.

Starting today, I will send 5 small series about Java virtual machines: actual Java Virtual machine one" heap overflow processing " actual Java Virtual machine two" virtual machine working mode " actual Java Virtual Machine three"

I. BackgroundThe Java language began as an internal project that Sun Computer (Sun Microsystems) began to study in December 1990. A company named Patrick Norton, an engineer at Sun Computers, wasSelf-developed C + + and C-language compilers are

Idle to Nothing, with Java's soft reference to write a cottage cacheBlog Category: Java Basics It is well known that references in Java are divided into Strongreference, SoftReference, WeakReference, Phantomreference. These kinds of

Integrated SSH Framework (3)SPRING4+HIBERNATE4+STRUTS2 integration, integration after the completion of the project I will upload it, but my advice is best or oneself in their own computer integration, I do not guarantee that there will be no

Because of the basic C #, Java basic knowledge is basically skipped, here as a review!Three technical architectures for Java:Java EE: (Java PlatForm Enterprise Edition) The development of business-class applications, primarily for the webJavase,

Spring AOP simple getting started and spring AOP getting started TestServiceinter. java 1 package com.frank.aop;2 3 public interface TestServiceinter {4 public void SayHello();5 6 } TestServiceImp. java 1 package com.frank.aop; 2 3 public

Make SWT/JFace support cross-platform, swtjface Because of the implementation mechanism of SWT, different swt *. jar must be referenced under different platforms. Due to this bottleneck, We need to compile different versions for different platforms.

Record the random probability and performance improvement of a random string Generation AlgorithmI. Preface background a few days ago, a project of my department connected to a bank experienced repeated business IDs, leading to many unforeseen bugs.