What is displayed after executing the following code: public static boolean isEmpty( String testStr ){ System.out.printin ("isEmpty ("+testStr+")"); return testStr.length () == 0; public static void main (String[] args) { String str = null; if( str != null 66 isEmpty( str ) ){ System.out.printın ("str is empty"); (nothing) A runtime error (at isEmpty( str )) A runtime error (at line: String str = null) A runtime error (at str != null) isEmpty(null) str is empty null str is empty
What is displayed after executing the following code: public static boolean isEmpty( String testStr ){ System.out.printin ("isEmpty ("+testStr+")"); return testStr.length () == 0; public static void main (String[] args) { String str = null; if( str != null 66 isEmpty( str ) ){ System.out.printın ("str is empty"); (nothing) A runtime error (at isEmpty( str )) A runtime error (at line: String str = null) A runtime error (at str != null) isEmpty(null) str is empty null str is empty
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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