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Java tutorial
  • js function to determine whether it contains characters other than GBK

    js function to determine whether it contains characters other than GBK

    boolean isGBK(String s) throws UnsupportedEncodingException { if(s.equals(new String(s.getBytes("gbk")))) return true; else return false; }
    2024-11-17
  • Some suggestions for optimizing hibernate performance in java

    Some suggestions for optimizing hibernate performance in java

    1 ＜property name="hibernateProperties"＞ 2 ＜props＞ 3 ＜prop key="hibernate.dialect"＞org.hibernate.dialect.Oracle9Dialect＜/prop＞ 4 ＜prop key="hibernate.show_sql"＞false＜/prop＞ 5 ＜!-- Create/update the database tables automatically when the JVM starts up 6 ＜pr
    2024-11-17
  • Detailed explanation of the process of making menu bar in Toolbar

    Detailed explanation of the process of making menu bar in Toolbar

    Article source: Internet Author: ggg82/CSDN Many user interfaces now use toolbars to create menu bars. I recently became interested in this and asked for help online. However, most of the help I received was the source code of BCGControlBar or the source
    2024-11-16
  • Design and implementation of a MIDP Tetris game

    Design and implementation of a MIDP Tetris game

    Article source: csdn Author: Chen Wanfei About the author Chen Wanfei, male, holds a bachelor's degree in mathematics and software from Central South University. He was a senior programmer and system analyst at Beijing Great Wall Software. He has rich
    2024-11-16
  • A brief discussion on assigning subclass objects to parent class objects

    A brief discussion on assigning subclass objects to parent class objects

    Recently, I have some experience in assigning subclass objects to parent class objects, and I would like to share it with you. However, my level is limited, so please correct me and criticize me. Closer to home, here are a few small examples, please take
    2024-11-16
  • Learn Java Swing game design from me (1)

    Learn Java Swing game design from me (1)

    Article Source: Computer Enthusiast Author: Zhang Jian Who knows how much sand and stone was used to build the Tower of Babel? Who knows how many days and nights it took to build Rome? The only thing we know is that without the bricks and stones, there wo
    2024-11-16
  • Top ten tips for connecting to oracle database through JDBC

    Top ten tips for connecting to oracle database through JDBC

    Article source: Database Forum Author: jackma Java Database Connectivity (JDBC) API is a series of interfaces that allow Java programmers to access databases. The interfaces of various developers are not exactly the same. After using Oracle's JDBC for
    2024-11-16
  • Object-Oriented Programming: Abstract Data Types in Java

    Object-Oriented Programming: Abstract Data Types in Java

    Article source: Internet Author: PaleSting/CSDN In this article, we will examine data types in Java, but we will introduce the concept of abstract data types (ADT). We will also learn about some of the ADTs defined by Java by introducing the Java Collecti
    2024-11-16
  • Reasons for choosing Java: Interview with the father of Java

    Reasons for choosing Java: Interview with the father of Java

    Article source: pconline Author: Yu Xiaofu The competition between Microsoft's .NET and SUNone has been going on for a long time, and it is getting more and more intense. Recently, Microsoft's Server2003 event has just concluded. On the morning of
    2024-11-16
  • Learn Java Swing game design from me (2)

    Learn Java Swing game design from me (2)

    Article Source: Computer Enthusiast Author: Zhang Jian Do you still remember the Minicooper who shuttled through the Hollywood traffic like an elf in "Surprise"? Mark Wahlberg and Sally Theron drove it to transport gold worth tens of millions un
    2024-11-16
  • List of new features in J2SE 1.5 version

    List of new features in J2SE 1.5 version

    Source of article: Internet Author: supertoto (translation)/CSDN.Net By the end of 2003, the beta version of J2SE1.5 will be released. This release and the two updates 1.4.1 and 1.4.2 of J2SE 1.4 that have been released now are released as expected at the
    2024-11-16
  • EJB Easy Advancement One

    EJB Easy Advancement One

    Article source: Silicon Valley Power Author: Mainstay 1. Introduction EJB (Enterprise JavaBeans) is a relatively advanced content in Java programming, and it is also the threshold for Java programmers to advance from entry level to expert level. A signifi
    2024-11-16
  • Implementation of Java runtime polymorphism

    Implementation of Java runtime polymorphism

    The output result is: This is B This is C In the above example, class B and class C are two classes that implement the interface InterA. They implement the method fun() of the interface respectively, and assign instances of class B and class C to the inte
    2024-11-16
  • Some things that are easy to make mistakes in Java writing

    Some things that are easy to make mistakes in Java writing

    1) instanceof: The object of a class that implements a certain interface is also an instance of the interface; the object of a certain class is also an instance of the super class of the class. 2) The method modified by native() has no method body, and
    2024-11-16
  • What is the difference between java and c#? What is the difference between the two?

    What is the difference between java and c#? What is the difference between the two?

    The designers of Java hate the complexity of C++, so Java is very concise, and GC also makes memory management very convenient. C# is interested in Java's GC and virtual machine technology, and hopes to integrate several major Microsoft languages ​​in
    2024-11-16
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