java basic concepts pdf

differences between Java and C + +Both Java and C + + are object-oriented languages that use object-oriented thinking (such as encapsulation, inheritance, polymorphism, and so on), because object-oriented is characterized by many very good features (inheritance, composition, etc.), so both have good reusability. 1" Java is interpreted language , whi

security problems. Java can be used to build anti-virus and anti-attack systems. it turns out that Java is better at anti-virus. (6) Neutral architecture: Java compiles and generates an architecture. The neutral target file format can be executed on many processors. The javabytecode generated by the compiler implements this feature, this bytecode can be interpre

client.What is J2EE,J2SE,J2ME?j2ee--Full name Java 2 Enterprise Edition, Java is a business Edition for enterprise-level application development.The j2se--full name Java 2 Standard Edition, is the Java Standards version, for standard application development, is also Java

Deep understanding of Java: basic concepts of Annotation and in-depth understanding of annotation What is Annotation ): Annotation (Annotation) is a way and method for Java to associate any information with any metadata (metadata) in elements of a metaprogram. Annotion (annotation) is an interface. The program can obta

only a single member and the member is named "Value=". This can save "value=". For example, the above method Getfruit () suppresswarnings annotation is abbreviated.Simple description of common parameter values for suppresswarnings annotations:1.deprecation: Warning when using a class or method that is not in favor of use;2.unchecked: Warning When an unchecked conversion was performed, such as when using a collection without generics (generics) to specify the type of collection to save;3.fallthr

Interneta Short history of Javacommon misconceptions about JAVACHAPTE R 2 the Java Programming Environment (new comments Total 20) Chapter 3 fundamental programming structures in Java (new comments Total 44) Chapter 4 Obje CTS and Classes (new comments Total 55) Chapter 5 Inheritance (new comments Total 42) Chapter 6 Interfaces and Inner Classes (new comments Total 24) Chapter 7 Excepti ONS, Logging, asser

annotation is abbreviated.Simple description of common parameter values for suppresswarnings annotations:1.deprecation: Warning when using a class or method that is not in favor of use;2.unchecked: Warning When an unchecked conversion was performed, such as when using a collection without generics (generics) to specify the type of collection to save;3.fallthrough: A warning when a Switch block directly leads to the next situation without a break;4.path: Warning when there is a nonexistent path