Preface
JavaSE learning route:
Java SE is the abbreviation of Java Platform Standard Edition, which includes basic grammar, object-oriented, tool classes, collection framework and framework underlying theory.
Basic syntax: including basic data types, reference data types, process control, arrays, classes and methods, documentation comments, object-oriented concepts, object-oriented features (encapsulation, inheritance, polymorphism, abstraction), interface concepts (coupling issues), Internal classes, data type conversion, string processing, mathematical operations, date and time processing , i/o stream operations, multithreading, file operations, generics, collection framework (List), enumeration, reflection mechanism . Wait.
Unfortunately, Java is really not suitable for developing desktop applications. The three versions of GUI development kits released by Java itself: AWT, Swing, and JavaFX, which can be cross-platform (unified look and feel), but have not been popularized at all, and there are major performance problems. Eclipse released SWT and JFace, the performance is improved, but not cross-platform. I personally feel that if the software developed needs to be cross-platform, such as Windows, Linux, and Mac need to be used, then you can consider using Java for development; if it is a separate Windows platform, or use other languages to develop, the efficiency is faster and the interface is more friendly . Therefore, in this course, we are not involved in desktop graphics application development.
In the j2se stage, the emphasis is on mastering the use of if statements, for loops, understanding and using interfaces, inheritance, and construction methods, and learning to check API documents. The difficulty at this stage lies in the content of collections, generics, jdbc, etc. You need to understand its basic usage and meaning.
This blog mainly talks about basic grammar and strengthens concepts that are easy to forget