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Java Articles
Page 74 of 450
Can a for statement loop infinitely in java?
Using loops in programming languages we can execute a set of statements repeatedly. Java provides various loops namely while loop, for loop and the do while loop.The for statement contains an initialization statement, a condition and, an increment or decrement operation.Initializing statement − The initialization determines the starting value of the loop.Condition − The condition in for loop is a statement returning a boolean value. This condition determines the exit value of the loop. It is executed before the statements of the loop.Increment and decrement − Using this the loop will be incremented or decremented to the next value.After initializing ...
Read MoreJava Programs for printing Pyramid Patterns. (of numbers)
Following is a Java program which prints a pyramid of numbers.Examplepublic class PrintingPyramids { public static void main(String args[]){ int n,i,j,k=1; n = 5; for(i = 0; i
Read MoreJava program to print a given pattern. (stars)
Following is a Java program which prints a pyramid of numbers.Examplepublic class PrintingPyramidStars { public static void main(String args[]){ int n,i,j; n = 5; for(i = 0; i
Read MoreJava program to cyclically rotate an array by one.
To rotate the contents of an array cyclically −create an empty variable. (temp)save the last element of the array in it.Now, starting from the nth element of the array, replace the current element with the previous element.Store the element in temp in the 1st position.Exampleimport java.util.Arrays; import java.util.Scanner; public class CyclicallyRotateanArray { public static void main(String args[]){ Scanner sc = new Scanner(System.in); System.out.println("Enter the required size of the array ::"); int size = sc.nextInt(); int [] myArray = new int[size]; System.out.println("Enter elements of the ...
Read MoreRecursive program to find an element in an array linearly.
Following is a Java program to find an element in an array linearly.Exampleimport java.util.Scanner; public class SearchingRecursively { public static boolean searchArray(int[] myArray, int element, int size){ if (size == 0){ return false; } if (myArray[size-1] == element){ return true; } return searchArray(myArray, element, size-1); } public static void main(String args[]){ System.out.println("Enter the required size of the array: "); Scanner s = new Scanner(System.in); int size = s.nextInt(); int myArray[] = new int [size]; System.out.println("Enter the elements of the array one by one "); for(int i=0; i
Read MoreProgram to print Sum Triangle of an array.
To generate a sum triangle of a given arrayGet the elements of the array from the user say, myArray[n].Create a two dimensional array say, result[n][n].Store the contents of the given array in the first row from bottom of the 2D array.result[n][i] = myArray[i].Now, from the second row of the 2D array fill elements such that ith element in each row is the sum of ith and (i+1)st elements of the previous row.result[i][j] = result[i+1][j] + result[i+1][j+1];Exampleimport java.util.Scanner; public class SumTriangleOfAnArray { public static void main(String args[]){ Scanner sc = new Scanner(System.in); System.out.println("Enter the ...
Read MoreProgram for printing array in Pendulum Arrangement.
To arrange elements of the array following pendulum arrangement.Sort the given array, create an empty array to store the result.Store the 0th element in a variable say temp.Store the element at index 1 in the sorted array in (mid+1)st position of the resultant array, and the next element int the (mid-1)st position and the next element in (mid+2)nd element and so on.Exampleimport java.util.Arrays; import java.util.Scanner; public class ArrayinPendulumArrangement { public static int[] swap(int origPos, int newPos, int[] array){ origPos = 1; newPos = 4; int temp = array[origPos]; ...
Read MoreJava program to print a given matrix in Spiral Form.
Following is a Java program to print the spiral form of a given matrix.Examplepublic class PrintMatrixInSpiralForm { public static void main(String args[]){ int a[][]={{1,2,3},{4,5,6},{7,8,9}}; int w = 0; int x = a.length-1; int y = 0; int z = a[0].length-1; while(w
Read MoreProgram to print a matrix in Diagonal Pattern.
Following is the Java program to print diagonal pattern of a given matrix.Examplepublic class DiagonalMatrix { public static void main(String args[]){ int a[][]={{1,2,3},{4,5,6},{7,8,9}}; int rows = a.length; int columns = a[0].length; for (int i = 0; i < rows; i++) { for (int r = i, c = 0; r >= 0 && c < columns; r--, c++){ System.out.print(a[r][c] + " "); } System.out.println(); } for (int i = 1; i < columns; i++) { for (int r = rows-1, c = i; r >= 0 && c < columns; r--, c++) { System.out.print(a[r][c] + " "); } System.out.println(); } } }Output1 4 2 7 5 3 8 6 9
Read MoreProgram for converting Alternate characters of a string to Upper Case.
You can convert a character to upper case using the toUpperCase() method of the character class.ExampleFollowing program converts alternate characters of a string to Upper Case.import java.util.Scanner; public class UpperCase { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter a string :"); String str = sc.nextLine(); str = str.toLowerCase(); char[] ch = str.toCharArray(); for(int i=0; i
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