How can I remove all non-letter characters from a string in Java?

Question

I have:

String str = txtInput.getText(); 
String words[] = str.replaceAll("\\p{P}", "").split("\\s+");   

...but I need it to remove numbers as well.

Answer 1

缩小您的正则表达式，使其仅包含非字母字符（以及空格，因此可以拆分）。

String[] words = str.replaceAll("[^A-za-z ]", "").split("\\s+");

Answer 2

String[] words = str.replaceAll("[0-9]","").split("\\s"});

Answer 3

str.replaceAll("[^A-Za-z ]", "");