What does the empty string in java mean?

This article mainly introduces the relevant knowledge of "what java hollow string refers to". Xiaobian shows you the operation process through actual cases. The operation method is simple, fast and practical. I hope this article "what java hollow string refers to" can help you solve the problem.

1. Empty string "" is a string of length 0.

An empty string is a Java object with its own string length (0) and content (empty). String variables can also hold a special value, null, indicating that there is currently no object associated with the variable.

examples

String str = "\r\n\t";System.out.println(str + "" + StringUtils.isBlank(str));str.replace("\r", ""); str. replace ("\t", ""); str.replace("\n", "");System.out.println(str + "" + StringUtils.isBlank(str)); The content of "Java hollow string refers to" is introduced here, thank you for reading. If you want to know more about industry-related knowledge, you can pay attention to the industry information channel. Xiaobian will update different knowledge points for you every day.