Java Error: Java12 Raw String Literals (original string literal) error, how to deal with and avoid

Java is a popular programming language that enables the creation of a variety of different types of applications. In the Java 12 version, a new feature - Raw String Literals (raw string literals) was introduced, which makes string processing more flexible and convenient. However, using this feature will also bring some problems, such as compilation errors. This article will introduce how to handle and avoid Java 12 Raw String Literals errors.

What are Java 12 Raw String Literals?

Java 12 Raw String Literals are a special type of string literals that allow developers to include special characters such as newlines and tabs directly in strings without using escape characters , which makes the code more readable. For example, the traditional way of defining a string:

String str = "Hello
world";

With the Raw String Literals feature, the same string can be defined like this:

String str = `Hello
world`;

In the second example, the backtick (`) between the two quotes represents a Raw String Literal.

Causes of Java 12 Raw String Literals Error

While using Java 12 Raw String Literals, developers may encounter many different errors, which may be caused by the following reasons:

1. The Raw String Literals string contains disallowed characters or escape characters. Common characters allowed in raw string literals include: letters, numbers, spaces, punctuation, and most Unicode characters, but not the backtick (`).

2. Raw String Literals Indentation is incorrect when a string contains multiple lines of text. This can cause compilation errors or runtime errors.
3. When using Raw String Literals, you need to specify a specific structure, such as a regular expression. If used incorrectly, it may also cause compilation errors or runtime errors.

How to handle and avoid Java 12 Raw String Literals errors?

Here are a few ways to handle and avoid Java 12 Raw String Literals errors:

1. Check the content of the string

You should be careful when using Raw String Literals Check the contents of the string to ensure there are no disallowed characters or escapes. The code will not compile if it contains disallowed characters or escapes.

2. Pay attention to the indentation

If the Raw String Literals string contains multiple lines of text, please make sure the indentation is correct. In Raw String Literals, incorrect indentation can cause compilation errors or runtime errors.

3. Use Raw String Literals to specify regular expressions

Java 12 Raw String Literals can be used to specify regular expressions, because such expressions usually contain a large number of special characters. If you use Raw String Literals to specify a regular expression, you need to ensure that it is formatted correctly.

4. Avoid using backticks in Raw String Literals

Java does not allow the use of backticks as ordinary characters in Raw String Literals. To avoid errors, you should remove backticks from the string or use another string literal.

5. Use advanced text editors

Some advanced text editors can help users and developers check and correct Raw String Literals errors. These editors can detect errors while writing code and provide automatic correction capabilities.

Conclusion

Java 12 Raw String Literals provides a more flexible and convenient way of processing strings. However, there are pitfalls to be aware of when using them. By carefully checking text content, paying attention to indentation, using regular expressions, avoiding backticks, and using advanced text editors, developers can better handle and avoid Java 12 Raw String Literals errors.

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