The ry/catch/finally statement is used to handle error messages that may appear in the code. Errors may be syntax errors, usually coding errors or typos made by the programmer. It could also be a typo or a missing feature in the language (possibly due to browser differences). The try: statement allows us to define a […]
Tag: finally
Project practice: component scanning (5) – parse methods with GetMapping or PostMapping and finally encapsulate them into ControllerDefinition
1. ControllerDefinition package com.csdn.mymvc.core; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; //Suppose there is a uri:/fruit/index @Data @NoArgsConstructor @AllArgsConstructor public class ControllerDefinition { private String requestMapping; private Object controllerBean; private Map<String, Method> methodMappingMap = new HashMap<>(); } 2. ComponentScan package com.csdn.mymvc.core; import com.csdn.mymvc.annotation.*; import java.io.File; import java.lang.annotation.Annotation; import java.lang.reflect.Field; import […]
final finally finalize difference stream stream Stream method mvc aop ioc understanding the difference between Collection and Collections Nacos AP, CP
Method to create thread 1. The class inherits Thread and overrides the run() method 2. The class implements the Runnable interface and overrides the run() method (no return value, no exception will be thrown) 3. Implement the Callable interface and implement the call() method (with a return value and an exception will be thrown) To […]
Go etcd dependency problem is finally solved. . .
Hello everyone, I am fried fish. In the past few years, I have been exposed to a bunch of microservice-related components very frequently: grpc + grpc-gateway + etcd + protobuf + protoc-gen-go. At first, everything was fine, and we gradually followed up with new versions. No, the moth is here. The development leaders (or companies) […]
I finally understand the memory structure of Java8 and no longer have to worry about the method area and constant pool!
Please read the original text directly Original link: I finally understand the memory structure of Java 8, and I no longer have to worry about the method area and constant pool! ————————————————– ————————————————– ————————– Note: The following memory structure is for JDK8 version java8 memory structure diagram The difference between virtual machine memory and local […]
Exceptions in java, and handling after exceptions [try, catch, finally]
1. Abnormal concept Exception: refers to an abnormal situation that occurs during the execution of the program, which will eventually cause the JVM to stop abnormally. Note: In object-oriented programming languages such as Java, the exception itself is a class. To generate an exception is to create an exception object and throw an exception object. […]
Convert the Boolean judgment expression into a conditional Javabean (the conditional structure can theoretically iterate through countless levels), and use it to judge the Boolean result finally generated by the form submission parameters.
Without further ado, let’s get into the code. The code format is wrong, and for some reason, it can only be copied bit by bit. public List<ActBPMNSequenceFlowConditionExpression> parseConditionExpressionToList(String conditionExpressionStr, Boolean ifJustExtra) { //1. Initialize variables //1.1 The aggregated conditional expression of the current flow direction to be finally returned List<ActBPMNSequenceFlowConditionExpression> conditionExpressions = new ArrayList<>(); //1.2 […]
Cool, I finally implemented the selenium image slider verification code! [With code]
Due to various reasons, we were unable to achieve the goal of the vision. Recording the intermediate results here can be regarded as an ending. This article is mainly about individual cases of using selenium to solve the slider verification code. Ideas: Use selenium to open the specified website in the browser Download incomplete block […]
HWUI Source Code Analysis (2) – Finally explain the ins and outs of the MVP matrix rendered by OpenGL
Overview In the process of studying the android8.1 HWUI source code, I found that OpenGL is a knowledge point that cannot be bypassed. If you do not understand the basics of OpenGL drawing, you will not be able to understand the basic principles of Hwui well. At the same time, after you are familiar with […]
Preliminary exploration of exception handling operation in Java language (try-catch-finally)
Exception handling mechanism The exception handling mechanism in Java allows the code to continue executing even if an exception occurs in the program rather than exiting the program directly. Let’s first briefly understand how to use exception handling. Before referencing exception handling, the existence of exceptions in the running code will cause the JVM to […]