Answers for "length size methods java"

1

length and length() method in java

length() : In String class we have length() method which is used 
to return the number of characters in string.
Ex : String str = “Hello World”;
System.out.println(str.length());
Str.length() will return 11 characters including space. 
  
length : we have length instance variable in arrays which will 
return the number of values or objects in array.
For example :
String days[]={” Sun”,”Mon”,”wed”,”thu”,”fri”,”sat”};
Will return 6 since the number of values in days array is 6
Posted by: Guest on November-30-2020
0

sizeof in java

/* There is no such method in the standard Java SE class library.
All primitive values have a predefined size, e.g. int is 4 bytes, 
char is 2 byte, short is 2 byte, long and float is 8 byte, and so on.
  
  A class to count sizeof primitive */
    
public class PrimitiveSizes {
   public static int sizeof(byte b) { return 1; } 
   public static int sizeof(short s) { return 2; }
   // etcetera
}
Posted by: Guest on June-12-2021

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