This article mainly introduces you to the relevant information on using the Java exception mechanism to implement a simulated book borrowing system. The article first briefly introduces the Java exception mechanism, and then introduces how to implement a console version in the Java language through sample code. Friends who need it can refer to the simulated book borrowing system. Let’s take a look. This article introduces the use of Java language to implement a console version of a simulated book borrowing system. Before starting the formal content of this article, let us first understand the Java exception mechanism. What is an exception? Abnormal, not normal. Exception is the abbreviation of Exception event, so an exception is an event that occurs when the program is running. Exceptions will affect the continuity of the program and cause the program to be interrupted. In Java, everything is an object, so to define exceptions, you also need to use objects. The exception object encapsulates the exception type and the status of the program when an exception occurs. What we often say about throwing an exception is to create an exception object and submit it to the running system. Exception catching mechanism and try-catch When an exception occurs, we need to know where the exception occurred, so how to locate the source of the exception? In Java, use
##Introduction: This article mainly introduces you to the relevant information on using the Java exception mechanism to implement a simulated book borrowing system. The article first briefly introduces the Java exception mechanism, and then introduces it through sample code. How does Java language implement a console version of a simulated book borrowing system? Friends who need it can refer to it and take a look.
2. Analysis of the internal mechanism principles of common JAVA collections
##Introduction: Everyone is familiar with commonly used collections, but they may only have a little understanding of the internal principles. The following is understood by reading the source code. Inside ArrayListArrayList is a dynamic object array container with a default size of 10,...
3.
.Net Principle of Garbage Collection Mechanism (1)
Introduction: With the garbage collection mechanism in Microsoft.NET clr, programmers no longer need to pay attention to when to release memory. This thing is completely done by the GC and is transparent to programmers. Nonetheless, as a .Net programmer it is necessary to understand how garbage collection works. In this article, we will take a look at how .Net allocates and manages managed memory, and then describe the algorithm mechanism of the garbage collector step by step.
4.
.Net Garbage Collection Mechanism Principle (2)
Introduction: The previous article introduced the basic principles of .Net garbage collection and the internal mechanism of garbage collection to execute the Finalize method; in this article we look at weak reference objects, generations, multi-threaded garbage collection, and large objects Processing and performance counters related to garbage collection.
5.
C++ Assert() assertion mechanism principle and usage
Introduction: C++ Assert() assertion mechanism principle and usage
6.
In-depth interpretation of the PHP plug-in mechanism principle_PHP tutorial
Introduction: In-depth explanation of the principles of PHP plug-in mechanism. In this article, we mainly tell you about some plug-ins, that is, Plug-in, which refers to a specific type of functional module (usually implemented by third-party developers). Its characteristics are: when you need7.
Correctly understand the principles of cookie and session mechanisms_PHP tutorial
Introduction: Correctly understand the principles of cookie and session mechanisms. subtitle8. In-depth interpretation of the principles of the PHP plug-in mechanism Introduction: In-depth interpretation of the principles of the PHP plug-in mechanism. In this article, we mainly tell you about some plug-ins, that is, Plug-in, which refers to a specific type of functional module (usually implemented by third-party developers). Its characteristics are: when you need 9. Correctly understand the principles of cookie and session mechanisms Introduction: Correctly understand the principles of cookie and session mechanisms. Subtitle 10. A brief description of the principles of MySQL backup and recovery mechanism Introduction: The article mainly discusses MySQL Backup and its recovery mechanism, as well as the correct maintenance of data tables, which mainly include two different table types: MyISAM and Innodb. The MySQL version designed in this article is 5.0.22. The following is a description of the specific content. The free MySQL backup tools currently supported by MySQL are: mysqldump, mysqlhotcopy [Related Q&A recommendations]:
The above is the detailed content of 10 recommended articles on mechanism principles. For more information, please follow other related articles on the PHP Chinese website!