Check whether a string is not null and not empty

Question

How can I check whether a string is not null and not empty?

public void doStuff(String str)
{
    if (str != null && str != \"**here I want to check          


        

Answer 1

For completeness: If you are already using the Spring framework, the StringUtils provide the method

org.springframework.util.StringUtils.hasLength(String str)

Returns: true if the String is not null and has length

as well as the method

org.springframework.util.StringUtils.hasText(String str)

Returns: true if the String is not null, its length is greater than 0, and it does not contain whitespace only