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  • Java thread method to create thread using Runnable interface

    Java thread method to create thread using Runnable interface

    Classes that implement the Runnable interface must use an instance of the Thread class to create threads. Creating a thread through the Runnable interface is divided into two steps: 1. Instantiate the class that implements the Runnable interface. 2. Creat
    2024-11-18
  • The use of the thread life cycle of java threads

    The use of the thread life cycle of java threads

    Just like people are born, old, sick and die, threads also have to go through four different states: starting (waiting), running, hanging and stopping. These four states can be controlled through methods in the Thread class. The methods related to these f
    2024-11-18
  • Implementation code of Java Annotation (Java annotation)

    Implementation code of Java Annotation (Java annotation)

    If you want to know what is java annotation? You can take a look first: "http://www.infoq.com/articles/Annotation-Hammer" Here is a demo I made: Project structure: Running effect: ============= ===================================== Code part: No
    2024-11-18
  • Java uses a simple demo example to show you the power of the optimization algorithm

    Java uses a simple demo example to show you the power of the optimization algorithm

    The demo here is an accumulation algorithm, such as 1,2,3,4...n, that is: sum = 1+2+3+4...+n; we can do this: copy code code As follows:/*** Loop implementation accumulation method* @param value* @return*/private static long cycle(long value) {long sum =
    2024-11-18
  • Java implements calendar (calendar for a certain year, calendar for a certain month) fully customized by users

    Java implements calendar (calendar for a certain year, calendar for a certain month) fully customized by users

    Users can customize the printing of the calendar for a certain year, that is, print out all the calendar for a certain year. For example, print out the calendar for 2013 as follows: Copy the code. The code is as follows: January 2013 ----------- ---------
    2024-11-18
  • Things about java internal classes_Let you understand them at a glance

    Things about java internal classes_Let you understand them at a glance

    In "In-depth analysis based on the role of java internal classes" you can understand some things about java internal classes, but there are still some places in internal classes worthy of our careful study... Here are some things about java inte
    2024-11-18
  • In-depth analysis based on the role of java internal classes

    In-depth analysis based on the role of java internal classes

    Many people may not be familiar with Java inner classes. In fact, a similar concept exists in C++, that is, nested classes. The differences and connections between the two will be compared below. On the surface, an inner class is just another class define
    2024-11-18
  • Example of conversion between string and date in java

    Example of conversion between string and date in java

    Copy the code as follows: import java.sql.Timestamp;import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;public class DateIO {public static void main(String [] args) {Date date= new DateIO().s
    2024-11-18
  • Detailed introduction to the use of Java input and output streams

    Detailed introduction to the use of Java input and output streams

    1. What is IO? I/O operations in Java mainly refer to input and output operations using Java. All I/O mechanisms in Java are based on data streams for input and output. These data streams represent the flow of character or byte data. sequence. Java's
    2024-11-18
  • Problem analysis of original code, inverse code and complement code in java

    Problem analysis of original code, inverse code and complement code in java

    1. Definition of original code, complement code and complement code 1. The original code uses the highest bit as the sign bit (0 represents positive, 1 represents negative), and the remaining bits represent the absolute value of the value itself (expresse
    2024-11-18
  • Introduction to the use of final and finally in java

    Introduction to the use of final and finally in java

    final can modify classes, member variables, local variables and methods. 1. Final modified member variables 1. Initialization of final member variables For final modified variables, the system will not initialize them to 0 by default. Fina variable initia
    2024-11-18
  • Analysis of the differences between overloading, overwriting and hiding in Java

    Analysis of the differences between overloading, overwriting and hiding in Java

    Overloading: multiple functions with the same name but the same method name but different parameters. Note: 1. Different parameters means that there is at least one difference in parameter type, number of parameters, and parameter order. 2. Return values,
    2024-11-18
  • Detailed explanation of the usage of Java multithreading

    Detailed explanation of the usage of Java multithreading

    1. Create a thread There are two ways to create a thread in Java: using the Thread class and using the Runnable interface. When using the Runnable interface, you need to create a Thread instance. Therefore, whether you create a thread through the Thread c
    2024-11-18
  • Analysis on the use of Java recursive algorithm

    Analysis on the use of Java recursive algorithm

    A recursive algorithm is an algorithm that calls itself directly or indirectly. In computer programming, recursive algorithms are very effective in solving a large class of problems. It often makes the description of the algorithm concise and easy to unde
    2024-11-18
  • Example introduction to detailed explanation of Java strings

    Example introduction to detailed explanation of Java strings

    1. Create objects. For direct string constants in Java programs, the JVM will use a string pool to save them. When a string direct constant is used for the first time, the JVM will put it into the string pool for caching. Under normal circumstances, strin
    2024-11-18
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