Answer Posted / abel
length and length( )
A) length variable:
length is an instance variable of type array. Array is an object, just like string, Object, JFrame, etc. The array class has an instance variable called length, when you say arrayName.length, you are getting the length of an array.
int student[] = new int[5];
System.out.println(student.length); // prints 5
length() method:
It is a method defined in String class. It gives the number of characters present in the string.
String str = "hello";
System.out.println(str.length()); // prints 5
Notice that in the first example made the length variable public, it can be accessed anywhere. In the second example it is private and cannot be accessed directly, so we provide a method which allows us to view the length variable.
It is like comparing two strings with == and equals(). equals() is a method call which takes more time than executing == operator.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How to create a base64 decoder in java8?
What is the difference between equals() and == in java?
Write a program to print count of empty strings in java 8?
What is a constructor overloading in java?
Write a program to find the whether a number is an Armstrong number or not?
What are the differences between heap and stack memory in java?
Differentiate between static and non-static methods in java.
Is minecraft 1.15 out?
What is parsing in java?
What is java string pool?
Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example
What is the difference between break and continue statements?
What is an object in java and how is it created?
Realized?
Explain public static void main(string args[]) in java.
