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Java Articles
Page 9 of 450
Java string case change sample code examples.
You can change the cases using the toUpperCase() and toLowerCase() methods of the String class.Examplepublic class Sample { public static void main(String args[]){ String str = "Hello how are you"; String strUpper = str.toUpperCase(); System.out.println("Lower to upper : "+strUpper); String strLower = str.toLowerCase(); System.out.println("Upper to lower : "+strLower); } }OutputLower to upper : HELLO HOW ARE YOU Upper to lower : hello how are you
Read MoreData Conversion Using valueOf() In Java.
Java String class provides several variants of valueOf() method. These accept various data types and convert them into String.Examplepublic class Sample { public static void main(String args[]){ int i = 200; float f = 12.0f; char c = 's'; char[] ch = {'h', 'e', 'l', 'l', 'o'}; String data = String.valueOf(i); System.out.println(String.valueOf(i)); System.out.println(String.valueOf(f)); System.out.println(String.valueOf(c)); System.out.println(String.valueOf(ch)); } }Output200 12.0 s hello
Read MoreHow to Convert Double to String to Double in Java?
Java lang package provides a Double class which has methods to convert Double to String and vice versa. You can convert a String to a double using the parseDouble() method and double to String using the toString() methodExamplepublic class StringDouble { public static void main(String args[]){ Double data1 = 2.2; String str = Double.toString(data1); System.out.println(str); Double data2 = Double.parseDouble(str); System.out.println(data2); } }Output2.2 2.2
Read MoreHow to write Java program to add two matrices
To add two matrices −Create an empty matrixAt each position in the new matrix, assign the sum of the values in the same position from the given two matrices i.e. if A[i][j] and B[i][j] are the two given matrices then, the value of c[i][j] should be A[i][j] + B[i][j]Examplepublic class AddingTwoMatrices{ public static void main(String args[]){ int a[][]={{1,2,3},{4,5,6},{7,8,9}}; int b[][]={{1,1,1},{1,1,1},{1,1,1}}; int c[][]=new int[3][3]; for(int i = 0;i
Read MoreHow to write Java program to add two matrices
To add two matrices −Create an empty matrixAt each position in the new matrix, assign the sum of the values in the same position from the given two matrices i.e. if A[i][j] and B[i][j] are the two given matrices then, the value of c[i][j] should be A[i][j] + B[i][j]Examplepublic class AddingTwoMatrices{ public static void main(String args[]){ int a[][]={{1,2,3},{4,5,6},{7,8,9}}; int b[][]={{1,1,1},{1,1,1},{1,1,1}}; int c[][]=new int[3][3]; for(int i = 0;i
Read MoreJava program to print the transpose of a matrix
The transpose of a matrix is the one whose rows are columns of the original matrix, i.e. if A and B are two matrices such that the rows of the matrix B are the columns of the matrix A then Matrix B is said to be the transpose of Matrix A.To print the transpose of the given matrix −Create an empty matrix.Copy the contents of the original matrix to the new matrix such that elements in the [j][i] position of the original matrix should be copied to the [i][j] position of the new matrix.Print the new matrix.Examplepublic class TransposeSample{ ...
Read MoreJava program to print the transpose of a matrix
The transpose of a matrix is the one whose rows are columns of the original matrix, i.e. if A and B are two matrices such that the rows of the matrix B are the columns of the matrix A then Matrix B is said to be the transpose of Matrix A.To print the transpose of the given matrix −Create an empty matrix.Copy the contents of the original matrix to the new matrix such that elements in the [j][i] position of the original matrix should be copied to the [i][j] position of the new matrix.Print the new matrix.Examplepublic class TransposeSample{ ...
Read MoreJava program to calculate mode in Java
In statistics math, a mode is a value that occurs the highest numbers of time. For Example, assume a set of values 3, 5, 2, 7, 3. The mode of this value set is 3 as it appears more than any other number.Algorithm1.Take an integer set A of n values. 2.Count the occurrence of each integer value in A. 3.Display the value with the highest occurrence.Examplepublic class Mode { static int mode(int a[], int n) { int maxValue = 0, maxCount = 0, i, j; for (i = 0; i < n; ...
Read MoreJava program to calculate mode in Java
In statistics math, a mode is a value that occurs the highest numbers of time. For Example, assume a set of values 3, 5, 2, 7, 3. The mode of this value set is 3 as it appears more than any other number.Algorithm1.Take an integer set A of n values. 2.Count the occurrence of each integer value in A. 3.Display the value with the highest occurrence.Examplepublic class Mode { static int mode(int a[], int n) { int maxValue = 0, maxCount = 0, i, j; for (i = 0; i < n; ...
Read MoreJava program to calculate the average of numbers in Java
An average of a set of numbers is their sum divided by their quantity. It can be defined as −average = sum of all values / number of valuesHere we shall learn how to programmatically calculate average.Algorithm1. Collect integer values in an array A of size N. 2. Add all values of A. 3. Divide the output of Step 2 with N. 4. Display the output of Step 3 as average.Examplepublic class AverageOfNNumbers { public static void main(String args[]){ int i,total; int a[] = {0,6,9,2,7}; int n = 5; total = 0; for(i=0; i
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