reverse engineer java class

Source: http://www.imooc.com/code/1236 In Java programs, it is often necessary to convert data between different basic data types. For example:, the int variable score1 in the code can do the assignment directly for the double variable Score2, and the result is: This conversion is called an automatic type conversion . Of course automatic type conversions are required to meet specific conditions :1. The target type can be compatible with the source

-order traversal of the following two-fork trees are written:3. What's wrong with the following procedure?public class Something{public static void Main (string[] args) {SomeThing s=new SomeThing (); System.out.println ("The S.dosomething () is" +dosomething ());} Public String dosomething () {return ' do something ';}}4. Insert sort and bubble sort which is good, why?5. What are the output results of the following programs?public

1th Chapter--JDBCJDBC FoundationJava database Connectivity enables Java programs to access back-end databasesA complete database deployment architecture, typically consisting of both client and server-side componentsThe client encapsulates the database request and sends it to the server side, and returns the result to the client after the server finishes execution.Common Client Tools:MySQL Workbench (graphical chemical tools are simple to operate but

Source: http://www.imooc.com/code/1256The so-called constant, which we can understand as a special variable, whose value is set, is not allowed to change during program Operation .Syntax:final constant name = value;Using Constants in your program can improve the maintainability of your code. For example, in project development, we need to specify the user's gender, at this time can be defined as a constant sex, assigned to "male", in the need to specify a user-specific place to call this constan

Iii. Framework ArticleFramework BasicsReflection: Reflection is a kind of dynamic correlation mechanism of Java development. Because the Java language itself is not a dynamic language, if we want to get the dynamic effect of the program, we introduce the concept of reflection mechanism.How do you express reflection?What can I do with reflection?PS: An interview question: What are the ways to create an insta

://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd " > Beans>At this point, no beans have been defined, so no beans can be fetched from the container4. Create a new class Screwdriver.java under src/main/java/Package:com.netease.nanodegree; Packag

represent a string. In the development of programs, many operations are done using strings, such as user names, passwords, e-mail addresses, etc. in the system.PS: Other small partners on reference types will be detailed in the later course.TaskTry your luck!Which type of variable is used to save the following data? Name: Adoration class Gender: Male Winning Numbers: 18 Price: 120.5 Are you sure

Source: http://www.imooc.com/code/1176Common keywords in Java:Q: So many, can't remember Ah ... -_-||A: Now you do not need to remember all, mix a familiar, in the course of learning, you will gradually find the feeling and remember themYes, almost forget the big thing, the Java keyword is case-sensitive Oh! So void is the keyword, but void is not the ~ ~TaskDo you understand the keywords in Java? Verify it

(); }} e.printstacktrace (); } finally { Try { if(Conn! =NULL) Conn.close (); if(Ptmt! =NULL) Ptmt.close (); } Catch(SQLException e) {e.printstacktrace (); } } } Isolation level of a transaction: 4 levels Read uncommited: May cause dirty Reads Read commited: cannot be dirty read, but will appear non-repeatable read Repeat read (REPEATABLE Read): Non-repeatable reads do not occur, but Phantom reads occur Serialization (SERIALIZABLE): Highest isolation level, no phant

Source: http://www.imooc.com/code/1177Q: Is the identifier God horse?A: Identifiers are symbols that are used to name variables, classes, methods, and so on in a Java program.There are several rules to follow when using identifiers:1. Identifiers can consist of letters, numbers, underscores (_), dollar symbols ($) , but cannot contain other special characters, such as @,%, space, etc. , and cannot begin with a number . For example: 123name is not lega

the return value of the method@exception description of the exceptions that the method might throwTaskPro, do you know how to add a note?In the editor, use a single-line comment to comment out the code in line 3rd, using a multiline comment to comment out the code in lines 5th and 62Operation Result: 1 public class helloworld{ 2 public static void main (string[] args) { 3 System.out.println ("Java