Java Articles - Page 467 of 540

Following is an example which computes find LCM and GCD of two given numbers.Programimport java.util.Scanner; public class LCM_GCD {    public static void lcm(int a, int b){       int max, step, lcm = 0;       if(a > b){          max = step = a;       } else{          max = step = b;       }       while(a!= 0) {          if(max%a == 0 && max%b == 0) {             lcm = max;             break;          }          max += step;       }       System.out.println("LCM of given numbers is :: "+lcm);    }    public static void gcd(int a,int b){       int i, hcf = 0;          for(i = 1; i

The Java.io.StringWriter class is a character stream that collects its output in a string buffer, which can then be used to construct a string. Closing a StringWriter has no effect.The Java.io.PrintWriter class prints formatted representations of objects to a text-output stream.Using these two classes you can convert a Stack Trace to a String.ExampleLive Demoimport java.io.PrintWriter; import java.io.StringWriter; public class StackTraceToString {    public static void main(String args[]) {       try {          int a[] = new int[2];          System.out.println("Access element three :" + a[3]);       } catch (ArrayIndexOutOfBoundsException e) ... Read More

The Java.io.StringWriter class is a character stream that collects its output in a string buffer, which can then be used to construct a string. Closing a StringWriter has no effect.The Java.io.PrintWriter class prints formatted representations of objects to a text-output stream.Using these two classes you can convert a Stack Trace to a String.ExampleLive Demoimport java.io.PrintWriter; import java.io.StringWriter; public class StackTraceToString {    public static void main(String args[]) {       try {          int a[] = new int[2];          System.out.println("Access element three :" + a[3]);       } catch (ArrayIndexOutOfBoundsException e) ... Read More

ExampleYou can check if a given string is Numeric as shown in the following program.Live Demoimport java.util.Scanner; public class StringNumeric {    public static void main(String[] args) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a string ::");       String str = sc.next();       boolean number = str.matches("-?\d+(\.\d+)?");       if(number) {          System.out.println("Given string is a number");       } else {          System.out.println("Given string is not a number");       }    } }OutputEnter a string :: 4245 Given string is a number

ExampleYou can check if a given string is Numeric as shown in the following program.Live Demoimport java.util.Scanner; public class StringNumeric {    public static void main(String[] args) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a string ::");       String str = sc.next();       boolean number = str.matches("-?\d+(\.\d+)?");       if(number) {          System.out.println("Given string is a number");       } else {          System.out.println("Given string is not a number");       }    } }OutputEnter a string :: 4245 Given string is a number

You can calculate the GCD of given two numbers, using recursion as shown in the following program.Exampleimport java.util.Scanner; public class GCDUsingRecursion {    public static void main(String[] args) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter first number :: ");       int firstNum = sc.nextInt();       System.out.println("Enter second number :: ");       int secondNum = sc.nextInt();       System.out.println("GCD of given two numbers is ::"+gcd(firstNum, secondNum));    }    public static int gcd(int num1, int num2) {       if (num2 != 0){          return gcd(num2, num1 % num2);       } else{          return num1;       }    } }OutputEnter first number :: 625 Enter second number :: 125 GCD of given two numbers is ::125

You can calculate the GCD of given two numbers, using recursion as shown in the following program.Exampleimport java.util.Scanner; public class GCDUsingRecursion {    public static void main(String[] args) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter first number :: ");       int firstNum = sc.nextInt();       System.out.println("Enter second number :: ");       int secondNum = sc.nextInt();       System.out.println("GCD of given two numbers is ::"+gcd(firstNum, secondNum));    }    public static int gcd(int num1, int num2) {       if (num2 != 0){          return gcd(num2, num1 % num2);       } else{          return num1;       }    } }OutputEnter first number :: 625 Enter second number :: 125 GCD of given two numbers is ::125

Suppose two floating point numbers are given as operands and your task is to write a Java program to multiply the given numbers. To perform this operation, initialize two float values, multiply and store the result in another float type variable. Float is a datatype in Java which stores numbers with fractional part. Example Scenario: Input 1: num1 = 1.2 Input 2: num2 = 1.4 Output: product = 1.68 Using Multiplication Operator The multiplication operator is represented by asterisk sign (*). It is categorized under arithmetic operator in Java. It can be used to multiply float values ... Read More

Suppose two floating point numbers are given as operands and your task is to write a Java program to multiply the given numbers. To perform this operation, initialize two float values, multiply and store the result in another float type variable. Float is a datatype in Java which stores numbers with fractional part. Example Scenario: Input 1: num1 = 1.2 Input 2: num2 = 1.4 Output: product = 1.68 Using Multiplication Operator The multiplication operator is represented by asterisk sign (*). It is categorized under arithmetic operator in Java. It can be used to multiply float values ... Read More

The Map class's object contains key and value pairs. You can convert it into two list objects one which contains key values and the one which contains map values separately. To convert a map to list − Create a Map object. Using the put() method insert elements to it as key, value pairs Create an ArrayList of integer type to hold the keys of the map. In its constructor call the method keySet() of the Map class. Create an ArrayList of String type to hold the values of the map. In ... Read More