java checking for null
Objects.isNull(obj) //returns true if the object is null
Objects.nonNull(obj) //returns true if object is not-null
if(Objects.nonNull(foo) && foo.something()) // Uses short-circuit as well. No Null-pointer Exceptions are thrown.java string is null or empty
public class Null {
public static boolean isNullOrEmpty(String str) {
if(str != null && !str.isEmpty())
return false;
return true;
}
}Copyright © 2021 Codeinu
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