javastring

Difference of isEmpty() and Zero Length String

What is the difference between these two methods?

public boolean nameControl(String str) 
{
    if (str.trim().isEmpty()) return false;
    if (str.trim().length() == 0) return false;
    return true;
}

I need find out that str should have at least one character.

Solution

  • There is no real difference between them.

    Javadocs for isEmpty()

    Returns true if, and only if, length() is 0.