A String is a non-primitive data type which represent the sequence of characters enclosed in double quotes . String can conrain letters , numbers , spaces , symbols and punctuation . Key characteristics of Java String are Immutability , Memory Optimization and constant pool. String is immutable because once a string object is created , […]
1.Q.What is String in Java? Read More »
Let, Given number be n , count the number of digits present in this number Example : Input n= 9876 Output: 4 There are 4 digits in 9876 , which are 9 , 8 , 7 & 6. Approach : In this approach count the digits by removing the digits from the given number starting
JAVA PROGRAM TO COUNT THE NUMBER OF DIGITS PRESENT IN A NUMBER Read More »
Given number is z , determine whether this number is Armstrong Number or not. A positive integer number of n digits is called an Armstrong Number of order n if abcd…=pow(a,n) + pow(b, n) +pow(c,n)+pow(d,n)+………, where a, b, c, d are digits of input number abcd….., n is the number of digits present in the
Java program for Armstrong Number Read More »
‘int’ is used for storing integer values. float is a single -precision floating -point data type, and double is a double-precision floating-point data type .The size of the ‘int’ data type is 4 bytes(32-bit), the size of the ‘double’ data type is 8 bytes( 64 -bit) and the size of the ‘float’ data type is
Q.11. What is the difference between ‘int’ , ‘double’ and ‘float’ data types in Java? Read More »
The default value of boolean variable in Java is ‘false’.
Q.10. What is the default value for a ‘boolean’ variable in Java? Read More »
The eight primitive data types in Java are byte, short , int , long , float , double , char and boolean.
Q.9.What are the eight primitive data types in Java? Read More »
data_type variable_name = initial_value;
Q.8. What is the syntax for initializing a variable in Java? Read More »
The purpose of initializing a variable in Java is to assign it an initial value so that it can be safely used in program . By initializing a variable, it prevents runtime exceptions , avoid compilation errors and enhance safety & security.
Q.7.What is the purpose of initializing a variable in Java? Read More »
