Core java

In this post, we will see about Strategy design pattern in java. Strategy design pattern allows us to change algorithm implementation at runtime.Strategy design pattern provides multiple algorithms and client can choose algorithm based on their needs with the help of composition. Strategy design pattern example Let’s understand this with the help of simple example. […]

In this post, we will see about Singleton design pattern in java. Singleton design pattern is one of the simplest design pattern but singleton property can be broken using multithreading, reflection, serialization etc, so you need to be careful while you create the singleton class. Singleton design pattern restricts a class to create multiple objects […]

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In this post, we will see how to multiply two matrices in java. import java.util.Scanner; public class MatrixOperator { public static void main(String args[]) { int r1, c1, r2, c2, sum = 0, i, j, k; Scanner in = new Scanner(System.in); System.out.print("Enter number of rows and columns of first matrix : "); r1 = in.nextInt(); […]

In this post, we will see how to add two matrices in java.I am giving example for 33 matrix. You can extend it to nn matrices. import java.util.Scanner; public class MatrixOperator { public static void main(String args[]) { int i, j; int mat1[][] = new int[3][3]; int mat2[][] = new int[3][3]; int res[][] = new […]

In this post, we will see how to subtract two matrices in java.I am giving example for 33 matrix. You can extend it to nn matrices. import java.util.Scanner; public class MatrixOperator { public static void main(String args[]) { int i, j; int mat1[][] = new int[3][3]; int mat2[][] = new int[3][3]; int res[][] = new […]

In this tutorial, we will see simple java program to convert celsius to fahrenheit in java. You can convert celsius to fahrenheit using this formula. fh = (1.8*cen) + 32; import java.util.Scanner; public class TempConvertor { public static void main(String args[]) { float cen; double fh; Scanner scanner = new Scanner(System.in); System.out.print("Enter Temperature in Centigrade […]