Capitalize a Word

package exam;

import java.util.Scanner;

public class exams {

    public static void main(String[] args)
    {

        Scanner scan=new Scanner(System.in);

        String input=null;
        char word;

        String output=null;

        System.out.println("Enter a Verse : ");
        input=scan.nextLine();

        System.out.println("Enter a Charachter to Capitalize :  ");
        word=scan.next().charAt(0);

        output=setCap(input,word);

        System.out.println("New Verse : " + output);

    }

    public static String setCap(String x,char c)
    {

        char[] arr=new char[x.length()];

       String nSring=null;

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

                arr=x.toCharArray();

            if(arr[i]==c)
            {

               c='x';
               arr[i]=c;

            }
        }

        nSring=String.copyValueOf(arr);
        return nSring;

    }

}

Client Socket Program

 

package sp;

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
public class Main {

    static Socket MyClient;
  
    public static void main(String[] args)
    {
        try
        {
            MyClient = new Socket("127.0.0.1", 80);
        } catch (UnknownHostException ex)
        {
            System.out.println(ex);
        } catch (IOException ex)
        {
            System.out.println(ex);
        }

    }

}

How to Create a AWT Frame

 

import java.awt.Frame;

 

public class Tarr extends Frame
{

 

public Tarr() //in constuctor put all the Frame things you need
{
    this.setSize(100,100);
    this.setVisible(true);
}

 

}

 

Then in the Main Function Create a New Object of this Class

Convert String to Integer

 

public class str{
    public static void main(String args[])
    {
        String a="1";
        int x=Integer.parseInt(a);

    }
}

String Buffer

 

 

public class strbuf
{
    public static void main(String args[])
    {
        String str1="Hello";
        StringBuffer strbuf=new  StringBuffer(str1);
        str1= strbuf.append("World").toString();
        System.out.println(str1);
    }
}

Search Number of Occurrences in String

import java.util.Scanner;

public class demo{
    public static void main(String args[])
    {
        char input;
        String str_input;
        char veb;
        int count=0;
        String str="Apple";
        Scanner scan=new Scanner(System.in);
        System.out.println("Enter a String");
        str=scan.nextLine();
        System.out.println("enter the Charchter you want to Search");
        str_input=scan.next();
        input=str_input.charAt(0);
        for(int i=0;i<str.length();i++)
        {
            veb=str.charAt(i);
            if(input==veb)
            {
                count++;
            }       
        }
            System.out.println("Occurances : "+count);
    }
}

Get Sum of numbers passing a Array to a Method

 

import java.util.Scanner;

public class avg{
    public static void main(String args[])
    {
        Scanner scan = new Scanner(System.in);
        double avg;
        int input[]=new int[5];
        System.out.print("Enter Values : ");
        for(int i=0;i<input.length;i++)
        {
            input[i]=scan.nextInt();   
        }
        avg=getsum(input);
        System.out.println("Sum is : "+avg);
    }
    public static double  getsum(int[] arr)   
    {
        double sum=0;
        for(int j=0;j<arr.length;j++)
        {
            sum=arr[j]+sum;
        }   
        return sum;
    }

}