Lesson5: String. Arrays

 1. isEmpty ve isBlanc ferqi

String a = "";
System.out.println(a.isEmpty());
System.out.println(a.isBlank());

System.out.println("-------------------");

String b = " ";
System.out.println(b.isEmpty());
System.out.println(b.isBlank());

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Arrays

int[] arr = {1, 2, 3, 4};