String Array and passing method in java

 In this task, we pass a method and also cover the passing String Array to the method.

Code:

 import java.util.Scanner;

public class StringArray{

  public static void main(String[] args){

      String[] names = {"Babar", "Fakhar", "Kohli", "Gilchrist"};

      //Take Array elements from user

      for(int i=0; i<names.length; i++){

         System.out.print("\nnames[" + i + "] = " + names[i]);

      }

   

  }//main

}//class

OutPut:

String Array and passing method in java

Searching an Element in Array and Return true if found in java

 In this task pass the Array to a method and search an Element in Array and Return true if found in java. we use the Scanner method and search the element in Array.

Code:

import java.util.Scanner;

public class SearchingElement{

  public static void main(String[] args){

       Scanner input = new Scanner(System.in);

       int size;

      // Size of Array

      System.out.print("Enter size of Array: ");

      size = input.nextInt();

      System.out.println("\n\n");

      //Declaring and creating an array of specified size

      int[] numbers = new int[size];

      //Take Array elements from user

      for(int i=0; i<size; i++){

         System.out.print("Enter value for numbers[" + i + "] = ");

         numbers[i] = input.nextInt();

         System.out.println("\n\n");

      }

      //Value to be searched

      System.out.print("Enter the Value you want to Search: ");

      int value = input.nextInt();

      // Calling method to find value

      boolean found = findValue(numbers,value);  

      if(found)

         System.out.print("\n " + value + " exists in the Array");  

      else

         System.out.println(value +" does not exist in Array");

   

  }//main

  public static boolean findValue(int[] array, int value){     

      //iterate over each element and print it

      for(int i = 0; i < array.length; ++i){

           if(array[i] == value){

                return true;

           } }

    return false;

  }

}//class

Code:

Searching an Element in Array and Return true if found in java

 

A program that determines whether an input number is an integer or a real number in java

 write a program that determines whether an input number is an integer or a real number.

Three sample runs of this program are as follows:

Enter a number: 50

The number 50 is an integer.

Enter a number: 50.0

The number 50 is an integer.

Enter a number: 50.75

The number 50.75 is a real number.

HINTS: Use only ONE variable for the input. You will also need to separate the real part (after the decimal point) of the input and the integer part (before the decimal point). Think about how you will do this.

Code:

public class NumberTypeLab5{

    public static void main(String[] args) {

     int x =25;

     x = x*100;

     if(x/100==0){

      System.out.println("Number is not integer: " + x);

     }  

     else{

      System.out.println("Number is integer: " + x);

     }

  }}