Custom exceptions are needed in test script writing, and it is often easy to create custom exception classes in Java. It can be a checked or unchecked exception. Here is a simple example to check the creation of custom exceptions in Java.

  • How do I create a custom exception class
  • Throws a custom Java exception
  • Catch custom exceptions
  • Check the output

Java custom exception

The following classes are simple Java classes that create custom exceptions.

package com.fun.base.exception;

public class FailException extends Exception {

    private static final long serialVersionUID = -7041169491254546905L;

    public FailException(a) {
        super("FunTester");
    }

    protected FailException(String message) {
        super(message); }}Copy the code

To create an exception:

  • To create aJavaclass
  • extensionExceptionclass
  • callsuper()

There are other constructors in the Exception class. This is a basic example of creating custom exceptions. This is the most common way.

Trigger a custom exception

In the example above, we created a custom FailException. Now, let’s throw this exception in the Java code example.


    public static void fail(String message) {
        throw new FailException(message);
    }

Copy the code

Steps to throw an exception:

  • Create an instance of FailException
  • Throw an exception using the throw keyword
  • Declare exceptions in methods using the throws keyword

Demo

    /** * Convert json object ** based on parsed content@param content
     * @return* /
    private static JSONObject getJsonResponse(String content, JSONObject cookies) throws FailException {
        JSONObject jsonObject = new JSONObject();
        try {
            if (StringUtils.isEmpty(content)) FailException.fail("Response is empty!");
            jsonObject = JSONObject.parseObject(content);
        } catch (JSONException e) {
            jsonObject = getJson("content=" + content, "code=" + TEST_ERROR_CODE);
            logger.warn("The response body is not in JSON format, it has been automatically converted to JSON format!");
        } finally {
            if(cookies ! =null && !cookies.isEmpty()) jsonObject.put(HttpClientConstant.COOKIE, cookies);
            returnjsonObject; }}Copy the code
  • Solemnly declare: The public account “FunTester” first, welcome to pay attention to the exchange, prohibit the third party to reprint. More original articles:18 original albums by FunTesterPlease contact for cooperation[email protected].

Hot article selected

  • Function This interface is used to test albums
  • Performance Testing Topics
  • Graphic HTTP brain map
  • Programming thinking for everyone
  • The Definitive Guide to Java Performance
  • Selenium parallel testing best practices
  • How do I maintain automated tests
  • About the UI test plan
  • Software testing outsourcing