Common Java Errors
1. After configuring Java environment variables, you still cannot use java Order.
Solution:
If this problem occurs on Windows 10 system, it is because some Windows 10 systems do not recognize the "JAVA_HOME" environment variable and change path Change all "%JAVA_HOME%" to the real folder path of the JDK. The environment variables are configured incorrectly. Carefully check whether the JDK folder address is correct. JDK failed to install properly, please reinstall.
2. The correct Java code cannot be run on the console
Java files can be compiled through the javac command, but cannot be run using the java command.
Solution:
If you are using a Windows 10 system, it may be caused by the system security permissions being too high and not allowing the Java virtual machine to operate the C drive. You can put the java file in another drive letter and run it.
The command to enter other drive letters is as follows: (for example, enter the D drive)
3. When generating the document, a javadoc error occurs - Unable Read Input length = 1
Solution:
You may not have selected any outputable Java files in the steps. This problem may be caused by the new version of eclipse itself. Don't worry about this function. This is not a Java technology, it is just a function provided by eclipse. You can continue to learn it later.
4. The 32-bit JDK cannot be found
On the official website, there is only JDK9, but JDK9 only has 64-bit installation packages, not 32-bit ones. What should I do?
Solution:
In the main download page, scroll down and you will see the JDK8 version . JDK8 has a 32-bit installation package.
If you want to download a lower version of JDK, scroll to the bottom of the webpage, find the "Java Archive" label, and click download on the right.
php Chinese website, a large number of free Java introductory tutorials, welcome to learn online!
The above is the detailed content of common errors in java. For more information, please follow other related articles on the PHP Chinese website!

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于结构化数据处理开源库SPL的相关问题,下面就一起来看一下java下理想的结构化数据处理类库,希望对大家有帮助。

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于PriorityQueue优先级队列的相关知识,Java集合框架中提供了PriorityQueue和PriorityBlockingQueue两种类型的优先级队列,PriorityQueue是线程不安全的,PriorityBlockingQueue是线程安全的,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于java锁的相关问题,包括了独占锁、悲观锁、乐观锁、共享锁等等内容,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于多线程的相关问题,包括了线程安装、线程加锁与线程不安全的原因、线程安全的标准类等等内容,希望对大家有帮助。

本篇文章给大家带来了关于Java的相关知识,其中主要介绍了关于关键字中this和super的相关问题,以及他们的一些区别,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于枚举的相关问题,包括了枚举的基本操作、集合类对枚举的支持等等内容,下面一起来看一下,希望对大家有帮助。

封装是一种信息隐藏技术,是指一种将抽象性函式接口的实现细节部分包装、隐藏起来的方法;封装可以被认为是一个保护屏障,防止指定类的代码和数据被外部类定义的代码随机访问。封装可以通过关键字private,protected和public实现。

本篇文章给大家带来了关于java的相关知识,其中主要介绍了关于设计模式的相关问题,主要将装饰器模式的相关内容,指在不改变现有对象结构的情况下,动态地给该对象增加一些职责的模式,希望对大家有帮助。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 English version
Recommended: Win version, supports code prompts!

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)
