Runtime error java как исправить

Java is a universal language that helps developers create robust applications. However, runtime errors occur occasionally, which can halt the execution of your program and cause frustration.

This blog post will look at some ways to fix Java runtime error. We will also discuss how to troubleshoot common issues and find the root cause of the problem. So, if you are experiencing runtime errors in Java, read on for some helpful tips.

1. Close The Conflicting Programs:

Although runtime errors are inconvenient and persistent, they are not entirely hopeless; fixes are available. The first method you can use is to close these conflicting Programs.

• Go to the Task Manager and press Ctrl-Alt-Del. This process will display a list of currently running programs.
• Go to the Processes tab and, one by one, stop the programs by highlighting them and clicking the End Process button.
• You’ll need to check if the error notice appears again after you halt a process.

You can proceed further once you’ve identified which program generates the error and reinstalls the application.

2. Uninstall And Reinstall The Program:

If the problem persists, uninstall and reinstall the software by obtaining the most recent version. When runtime issues are discovered after a program has been released to the public, developers frequently offer fixes or tiny updates.

You can follow these steps to uninstall the program for a different Windows version.

• In Window 7, Click the Start button, Control Panel, and Uninstall a program.
• For Windows 8, go to the Start button, scroll down to More Settings, and then Control panel > Uninstall a program.
• Put Control Panel into the search box in Windows 10, click the result, and select Uninstall an application.
• Click the problem program in Programs and Features and then Update or Uninstall.

If you decided to update, follow the prompts to finish the process; if you selected to remove, follow the prompts to uninstall and then re-download or use the application’s installation DVD to reinstall the program.

3. Reduce The Input Error:

User input can corrupt an application in different ways. If the user entered less than < or excellent than > sign on the HTML comment board, it destroys that web page to load. The data cleaning converts the extended data that could be entered into the application into a safe range of values so that the program can understand and comprehend it.

The use of Java library files helps reduce run time errors due to input sanitization failure. Java Framework like Hibernate validator and Apache BVal perform explanatory input cleaning, and both frameworks also easily integrate into Java Based Applications.

4. Install Virus Protection Program:

Because malicious software can tamper with system settings and computer memory, they can occasionally cause runtime issues. Install a good antivirus tool and run it periodically to remove unwanted software from your computer to fix runtime errors caused by computer viruses. Also, make sure the Anti-virus program is the most recent updated version, run a thorough scan on your computer, or run Windows Update to receive the most recent virus definitions and fixes.

5. Use Load Testing Tool:

Some of the runtime errors of java occur due to limited resources caused by the problems of infrastructures. For Instance, Overutilization of CPU, low RAM, network timeout, or unable to schedule thread or process by the kernel.

The use of load testing tools like JMeter and LoadRunner is a simple method to avoid this type of error. These tools detect performance problems and stop applications before moving to production deployment.

Some applications may have unpredictable workloads to use a cloud-based balancing technique. This method will resolve both limited resources and purchasing expensive hardware relay.

6. Run Disk Cleanup:

A minimal amount of free space on your PC could be causing the runtime issue. It would help if you thought about backing up your stuff and clearing up hard drive distance. You can also restart your computer after clearing your cache. You can also use Disk Cleanup, go to your explorer window, and right-click your primary directory, usually C disk. Select Properties and then click Disk Cleanup.

7. Reduce External Resource Configuration:

An external resource can cause an error runtime error if one of the following situations occur:

When there are Changes in IP address, Changes in Firewall Configuration, and the maintenance of the external system.

The application must react while the resource is being changed. For Instance, the developer of APP12 keeps all configuration data external so that the application quickly responds while changing resources. It must deal with external resource change without changing the base code and avoid application rebuilding.

Another tool to avoid this problem is the chaos engineering tool randomly terminates the app depending upon that app. In such an app, developers create code that remains flexible even when external systems fail. Developers cannot control the built-in issue with external recourse, but they minimize it by controlling how applications behave while external resources fail.

8. Reinstall Runtime Libraries:

The Java runtime error message could be caused by an update, such as the MS Visual C++ package, when it did not adequately or entirely. Then you can remove the current package and replace it with a new one.

Go to Programs and Features, find and highlight the Microsoft Visual C++ Redistributable Package, and uninstall it. Uninstall the package at the top of the list and Reboot your computer when you are finished. After that, download and install the most recent Microsoft redistributable package.

9. Developer Must Build Proper Logic

Not every time runtime error is caused by data entry, but it can also be due to logical error. Sometimes code contains a logical fallacy that causes an application fails at the runtime.

Java contains the Runtime Exception feature to handle code-related runtime errors. Java17 has 78 errors in its software development kit.

Runtime Exception has the following common feature:

1. Arithmetic Exception like dividing by zero error.
2. Class Cast Exception like data type conversion error.
3. Null Pointer Exception like when the null object calls the method.
4. Index out Of Bound Exception is when the array accesses the nonexistence element.

Here you cannot do anything on your own; the developer himself must fix this.

10. Use Trusted Libraries

The complex and non-trivial applications contain many dependencies of third-party libraries to perform different tasks like input validation, logging and form handling, etc. Any error of a third-party library becomes the error of the application.

One method to reduce third-party library runtime error of dependences only use trusted libraries such as Eclipse or Apache.

Another defensive method is to update the latest version of the application regularly.

Also Check: How To Fix Android Delayed Notifications? 14 Easy Solutions

Conclusion

Java is a universal language that has many uses. While it can be challenging to learn, the benefits are worth it.

Runtime errors can be frustrating and challenging to fix. We hope that this guide has helped you understand the causes of runtime errors and how to fix them. If you still have questions or need help, please don’t hesitate to reach out to us for assistance.

While working with the programming languages like executing a software program, there are many instances that we run into issues due to the run time errors or compilation errors. All these errors occur when the application is running. You might come across an instance where the application acts differently in a negative way to the requirements, then it means that a runtime error took place.

As it is one of the most common type of error that occurs during a software executive, let us get a deep idea on how to fix common types of runtime errors in Java and also the steps to be taken to resolve them on a timely basis.

Fix the 5 Most Common Types of Runtime Errors in Java

 What is a Runtime Error in Java?

A runtime error in Java is referred to as an application error that comes up during the execution process of the program. This runtime error usually takes place when the syntax is corrected as expected while the issue lies during the program execution. All these errors can be detected by JVM – Java Virtual Machine and cannot be identified during the compilation time. Java is one of the most sought-after programming languages for the hiring managers across the world. So become an expert in Java through our Java Training and grab the best job opportunity.

Now, In this post, Let us discuss the top runtime errors in Java.

1. Division by zero errors
2.  IO errors
3. Out of range errors
4. Undefined object errors

Differences Between Compile Time Error and Runtime Error in Java

Compile time errors are those errors in which the syntax would be incorrect in the application code. An example would be like missing semicolons, parenthesis, incorrect keywords, usage of undeclared variables, etc. 

The Java compiler is capable of detecting the syntax errors during the compile time and the error message will be appearing on the screen. The compiler is also capable of preventing the code from the execution unless and until the error is resolved. Therefore it is important that these errors are addressed by making the necessary changes before the program is successfully executed.

The runtime errors occur during the program execution after the compilation has completed. Any program that is throwing a runtime error means that there are no issues with Syntax in the program.

Why Runtime Error Occurs in Java ?

 Below listed are the most common types of runtime errors that occur in Java.

1. Accessing an element that is out of range in an array
2. Dividing a number with 0
3. Less space or insufficient space memory
4. Conversion of an invalid string into a number
5. Attempting to store an incompatible value to a collection

When you come across such an address, you need to know that the Java compiler will be generating an error message and the program gets terminated abnormally. Runtime errors do not require to be caught explicitly. It is useful if you catch the runtime errors and resolve them to complete the program execution. 

Let us review a few of the most common runtime errors in Java programming with examples to gain a deeper understanding.

1. Accessing Out of Range Value in an Array

In the above example, the array is initialized with 8 elements. with the above code, An element at position number 8 is trying to get access and does not exist at all, leading to the Exception java.lang.ArrayIndexOutOfBoundsException:

Error :

2. Division by Zero Error

Below is an example of java.lang.ArithmeticException which occurs when the user is trying to code in such a way that they perform the division by zero.

In the above code, the integer num1 is getting to be divided by num2 which has a value of zero, which is leading to the exception called java.lang.ArithmeticException

Below is the Error Thrown :

3. Less Space or Insufficient Space Memory Error

Below is an example of java.lang.OutOfMemoryError, which occurs when the user is trying to initialize an Integer array with a very large size, and due to the Java heap being insufficient to allocate this memory space, it throws an Error  java.lang.OutOfMemoryError: Java heap space

Error :

4. Conversion of an Invalid string into a Number

Below is an example of java.lang.NumberFormatException, occurs when the user is trying to convert an alphanumeric string to an integer which leads to java.lang.NumberFormatException

Error :

5. Attempting to Store an Incompatible Value to a Collection

Below is an example where user has created the ArrayList of String but trying to store the integer value which leads to Exception   java.lang.Error: Unresolved compilation problem

Error :

How to solve Runtime Rrror in Java Programming?

 The runtime errors can be solved by using the try catch blocks in Java. Below are the steps to be followed:

1. You will need to Surround the statements that are capable of throwing an exception or a runtime error in the try catch blocks.
2. The next step is to catch the error.
3. Based on the requirements of the court or an application, it is important to take the necessary action.

Like we discussed earlier about the ArithmeticException example, it can be corrected by making the below changes.

As the code is surrounded in the try catch blocks, the program will continue to execute after the exception is encountered.

Result :

In this way, it is important for you to identify the Runtime errors and also clear them without any hesitation. You can make use of the try catch blocks and many other resolutions which were helped in successful program execution. Also you will be able to track, manage and analyze the errors in real time. So this was all from this tutorial about fixing the 5 most common types of Runtime Errors in Java But still, if you have any queries, feel free to ask in the comment section. And don’t forget to stay tuned with the Tutorials field to learn this type of awesome tutorial. HAPPY CODING.

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Привет. Пишу олимпиаду. Проверочная компиляция проходит на сервере. Хоть у меня у самого успешно компиляция проходит, на сервере происходит Runtime error. Не могли бы вы подсказать, из-за чего может возникать такая ошибка?

Задача сама по себе элементарная (Умножение матриц)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Locale;


class solver {

    public static void main(String[] args) throws IOException {
        int Arows, Acols;
        int Brows, Bcols;

        try {
            BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in)); // Get A array size
            String str1 = br1.readLine();
            String[] sub1 = str1.split(" ");
            Arows = Integer.parseInt(sub1[0]);
            Acols = Integer.parseInt(sub1[1]); 

        } catch (IOException e) {

            System.out.println(e.getMessage());
            return;
        } 

        int[][] Aarray = new int[Arows][Acols]; // Initialize and fill A array

        try {
            for (int i = 0; i < Arows; i++) {
                BufferedReader br2 = new BufferedReader(new InputStreamReader(System.in));
                String str2 = br2.readLine();
                String[] sub2 = str2.split(" ");
                for (int j = 0; j < Acols; j++) {
                    Aarray[i][j] = Integer.parseInt(sub2[j]);
                }

            }
        } catch (IOException e) {

            System.out.println(e.getMessage());
            return;
        } 

        try {
            BufferedReader br3 = new BufferedReader(new InputStreamReader(System.in)); // Get B array size
            String str3 = br3.readLine();
            String[] sub3 = str3.split(" ");
            Brows = Integer.parseInt(sub3[0]);
            Bcols = Integer.parseInt(sub3[1]); 
        } catch (IOException e) {

            System.out.println(e.getMessage());
            return;
        } 



        int[][] Barray = new int[Brows][Bcols]; // Initialize and fill A array

        try {
            for (int i = 0; i < Brows; i++) {
                BufferedReader br4 = new BufferedReader(new InputStreamReader(System.in));
                String str4 = br4.readLine();
                String[] sub4 = str4.split(" ");
                for (int j = 0; j < Bcols; j++) {
                    Barray[i][j] = Integer.parseInt(sub4[j]);
                }

            }
        } catch (IOException e) {

            System.out.println(e.getMessage());
            return;
        } 

        if (Acols == Brows) {
            int iter;
            double res;
            double[][] Rarray = new double[Arows][Bcols]; // Initialize result array

            for (int i = 0; i < Arows; i++) {
                for (int j = 0; j < Bcols; j++) {
                    iter = 0;
                    res = 0;
                    while (iter < Acols) {
                        res = res + Aarray[i][iter]*Barray[iter][j];
                        iter = iter + 1;
                    }
                    Rarray[i][j] = res;
                }
            }
            System.out.printf(Locale.US, "%d %dn", Arows, Bcols);
            for (int i = 0; i < Arows; i++) {
                for (int j = 0; j < Bcols; j++) {
                    System.out.printf(Locale.US, "%.0f ", Rarray[i][j]);
                }
                System.out.printf(Locale.US, "n");
            }
        }
    }

}