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Learn more about the transient keyword in Java

In the process of learning Java, the reason why the transient keyword is rare is actually inseparable from its function: the main function of the transient keyword is to prevent certain member attribute variables modified by the transient keyword from being serialized.

Nov 27, 2019 pm 04:28 PM

java transient Keywords

Deep understanding of the static keyword

The main meaning of static is to create domain variables or methods that are independent of specific objects. So that even if the object is not created, you can still use properties and call methods! Another key role of the static keyword is to form static code blocks to optimize program performance.

Nov 27, 2019 pm 04:15 PM

java static

What are the container classes in java

This article introduces the container classes in Java from the java introductory program column. I hope it can help students in need. Container classes in java: 1. List (list); 2. Set (set); 3. Queue (queue); 4. Map (mapping).

Nov 27, 2019 pm 03:35 PM

java Container class

Detailed introduction to Lambda expressions in java

This article introduces lambda expressions in Java in detail from the Java Quick Start column. Everyone is welcome to learn together! A lambda expression is a transitive block of code that can be executed one or more times later.

Nov 27, 2019 pm 03:22 PM

java lambda expression

What are the differences between abstract classes, ordinary classes and interfaces in Java?

This article introduces the differences between abstract classes, ordinary classes, and interfaces from the Java language introduction column. I hope it can help you better understand these concepts. The difference between abstract classes and ordinary classes is that abstract classes cannot be instantiated; the difference from interfaces is that abstract classes can have constructors, but interfaces cannot have constructors.

Nov 27, 2019 pm 02:27 PM

java the difference abstract class interface

Java in-depth learning of static static code blocks

This article introduces the knowledge about static static code blocks from the java introductory program column. I hope it can help everyone understand it better! Static code blocks are called when the class is loaded, are executed only once, and take precedence over various code blocks and constructors.

Nov 27, 2019 pm 02:00 PM

java static

The difference between comparable and Comparator in java

This article introduces the difference between the two comparators in Java from the Java Quick Start column. I hope it can help you. The difference between the two comparators in Java is: "Comparable" is an internal comparator, and "Comparator" is an external comparator.

Nov 27, 2019 pm 01:20 PM

comparable comparator java the difference Comparators

What are the common syntax errors when using for loops in Java?

Common syntax errors when using "for" loops in "java" are: 1. Variable declarations cannot be included in the output statement; 2. Two variables with the same name cannot be declared inside the same "for" loop; 3. Variable declarations cannot be included in the output statement. A specific method is required for output.

Nov 27, 2019 am 10:34 AM

for java Grammatical errors

3 ways to create threads in Java and their differences

How to create thread in java? The following article will introduce to you 3 ways to create threads and their differences. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

Nov 26, 2019 pm 05:19 PM

java thread

How to create objects in Java? Five ways to introduce

In fact, there are many ways to create objects, not only the new method to create objects, but also the reflection mechanism to create objects, the clone method to create objects, and the serialization and deserialization methods to create objects. Here is a summary of several ways to create objects, so as to learn how to create objects in Java.

Nov 26, 2019 pm 05:09 PM

java object

Detailed explanation of Java generics (summary of knowledge points)

Generics are a very basic and important concept in programming language design. What are generics in Java? Why are they there? How did they develop?

Nov 26, 2019 pm 05:04 PM

java Generics

10 key knowledge points about Java exceptions

An exception is a problem that prevents the current method or scope from continuing execution. The following article summarizes ten key knowledge points about Java exceptions, which are useful in interviews or at work.

Nov 26, 2019 pm 04:54 PM

java abnormal

What do queues in java include?

Queues in "java" include: 1. Restricted queue; 2. Priority queue; 3. Thread-safe queue based on linked list; 4. Bounded queue based on array; 5. Unbounded queue based on linked list; 6. Priority-based queue. Sequential unbounded queue; 7. Queue based on time priority; 8. Queue without containers inside.

Nov 26, 2019 pm 04:22 PM

java queue

What is the process of developing management information system using java and sql

The process of developing a management information system using "java" and "sql" is: first need to conduct demand analysis, then start system design, then system development, system testing, and finally formal system operation and system maintenance.

Nov 26, 2019 pm 03:37 PM

java sql process MIS