What is the Java Level 2 exam?

The Java Computer Level 2 exam will not be too difficult.

Public basic knowledge part 30 points Professional language part 70 points Java language programming Basic requirements:

Master the characteristics and implementation mechanism of Java language and architecture.

2. Master the object-oriented features of the Java language.

3. Master the data types and structures provided by the Java language.

4. Master the basic techniques of Java language programming.

5. Can write Java user interface programs.

6. Can write simple Java applications.

7. Be able to write Java applet.

8. Understand the application of Java.

Exam content:

1. Characteristics and implementation mechanism of Java language

2. Java architecture 1. JDK directory structure. 2. Java API structure. 3. Development environment settings. 4. Java program structure.

3. Object-oriented features in Java language. 1. Basic essentials and characteristics of object-oriented programming. 2. Basic composition and use of classes. 3. Generation, use and deletion of objects. 4. Interfaces and packages. 5. Commonly used classes and interfaces in Java class libraries.

4. Java simple data types and operations 1. Variables and constants. 2. Basic data types and conversions. 3. Class packaging of simple data types in Java class libraries. 4. Operators and expression operations. 5. Arrays and strings.

5. Basic statements of Java language 1. Expression statement. 2. Conditional statements. 3. Loop statement. 4. Comment statement. 5. Exception handling.

6. Basics of Java programming technology 1. The essentials and use of threads. 2. Synchronization and sharing. 3. Essentials and purposes of serialization. 4. Serialization method. 5. Examples of serialization. 6. Text-based applications. 7. Files and file I/O. 8. Collections interface.

7. Writing user interface programs 1. Graphical user interface. 2. Introduction to AWT library. 3. Introduction to SwingF. 4. Comparison between AWT and Swing.

8. Writing Applets 1. The concept of small applications. 2. Security mechanism. 3. Applet execution process. 4. Graphic drawing of Applet. 5. Applet window. 6. Applet’s working environment. 7. Java Application and Applet.

9. Application of Java

10. Download and operation of J2DK.

Examination method: Written test: 90 minutes, full score is 100 points, including 30 points for the public basic knowledge part. Hands-on operation: 90 minutes, full score is 100 points. Requirements for computer-based question types: (1) Basic operations. (2) Simple application. (3) Comprehensive application.

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