如何使用Java解析来自html源代码的特定信息

I know there is lots of topics for my question but I couldnt find helpful solution for my answer. I could connect to website and read line by line in Java, now here is my problem. I want to parse a specific info from a html page. This page includes 5-day weather forecast. for example the date of forecast tag is like this ;I know there is lots of topics for my question