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全部目标 Java 语法 Java 核心 Java 多线程 Java 集合 JSP 和 Servlet Module 3. Java Professional Module 4. SQL & Hibernate Module 5. Spring
全部级别 级别 0 级别 1 级别 2 级别 3 级别 4 级别 5 级别 6 级别 7 级别 8 级别 9 级别 10 级别 11 级别 12 级别 13 级别 14 级别 15 级别 16 级别 17 级别 18 级别 19 级别 20 级别 21 级别 22 级别 23 级别 24 级别 25 级别 26 级别 27 级别 28
  • You've reached Level 31

    Java 集合
    第 1 级, 课程 0
    You've reached Level 31
    可用
  • File, Files, Path

    Java 集合
    第 1 级, 课程 1
    "Hi, Amigo. Long time, no see." "Hi, Bilaabo. What are you going to talk about?" "Today I'm going to tell you about working with files. Java has a special class (File) that you can use to manage files on a hard drive. For managing file contents, there are other classes: FileInputStream, FileOutputStream, etc ..."
    可用
  • Practice using File

    Java 集合
    第 1 级, 课程 2
    "Hi, Amigo! I came up with a couple of interesting tasks for you." "They can only be completed in IntelliJ IDEA. Take a look at these interesting conditions…"
    可用
  • Files, Path

    Java 集合
    第 1 级, 课程 3
    "Oh, Rishi! Hi!" "Hi, Amigo! How's life?" "Great. Bilaabo has just been telling me a bunch of interesting things about File, and how to work with it." "As it happens, I think I have something to add on this topic." "Really? Then I'm all ears." "Okay, listen up. Java is constantly evolving. Its developers are constantly looking for new ways to do different things more efficiently. In Java 7, they added an alternative to the File class ..."
    可用
  • Practice with Files and Path

    Java 集合
    第 1 级, 课程 4
    "Hi, Amigo!" I came up with a couple of interesting tasks for you." "They can only be completed in IntelliJ IDEA. Take a look at these interesting conditions…"
    可用
  • FileInputStream, FileOutputStream, ZipOutputStream, ZipInputStream

    Java 集合
    第 1 级, 课程 5
    "Hi, Amigo!" "Hi, Ellie!" "Today we're going to study I/O streams." "Yes, I already know everything about them. We use the FileInputStream and FileOutputStream classes here." "Yep, and which of these classes' methods do you know?" "Sure. Here are the methods of FileInputStream ..."
    可用
  • Tasks | Level 7 | Lesson 6

    Java 集合
    第 1 级, 课程 6
    "Hi, Amigo!" I came up with a couple of interesting tasks for you." "They can only be completed in IntelliJ IDEA. Take a look at these interesting conditions…"
    可用
  • Reader, Writer

    Java 集合
    第 1 级, 课程 7
    "Hi, Amigo, once again." "Hello to you, Rishi. What will today's lesson be about?" "Today I'm going to tell you about Reader and Writer." "But, Rishi, I'm already know almost everything about them!" "Repetition is the mother of learning." "Hmm. Well, okay." "Reader and Writer are analogs to InputStream and OutputStream, but they work with characters, not bytes. Sometimes they are also called character streams, as opposed to InputStream ..."
    可用
  • Tasks | Level 1 | Lesson 8

    Java 集合
    第 1 级, 课程 8
    "Hi, Amigo!" I came up with a couple of interesting tasks for you." "They can only be completed in IntelliJ IDEA. Take a look at these interesting conditions…"
    可用
  • Properties

    Java 集合
    第 1 级, 课程 9
    "Today we are exploring another new and interesting topic: properties." "In Java, it's customary to make programs flexible and easily customizable, i.e. easily configurable." "For example, once per hour your program copies files from a certain directory, zips them, and sends them to you in email. To do this, the program needs to know the directory where the files will be taken from, and the email address where they should be sent ..."
    可用
  • Tasks | Level 1 | Lesson 10

    Java 集合
    第 1 级, 课程 10
    "Hi, Amigo! Here, take this interesting task. You can only complete this task in IntelliJ IDEA ..."
    可用
  • Learning to google | Level 1 | Lesson 11

    Java 集合
    第 1 级, 课程 11
    "Hi, Amigo!" "Let's continue our lessons on how to google." "Here are some exercises ..."
    可用
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CodeGym CodeGym 是一个从零开始学习 Java 语言编程的在线课程。本课程是初学者掌握 Java 语言的绝佳方式。它包含 1200 多个可即时验证的任务,以及基本范围内的 Java 基础理论。为了帮助你在教育上取得成功,我们实现了一组激励功能:小测验、编码项目以及有关高效学习和 Java 语言开发人员职业方面的内容。
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