how to remove all special characters and numbers from a string java code example

Example 1: how to remove all special characters from a string in java

String str= "This#string%contains^special*characters&.";   
str = str.replaceAll("[^a-zA-Z0-9]", " ");  
System.out.println(str);

Example 2: Remove special characters from string

var outString = sourceString.replace(/[`~!@#$%^&*()_|+\-=?;:'",.<>\{\}\[\]\\\/]/gi, '');