Java Program For String Methods

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Program 1

package testcoreproject;

public class TestStringMethod 
{
    public static void main(String[] args) 
    {
//         String S="Data Flair";
//           System.out.println(S.toUpperCase().length());
        System.out.println("data flair".toUpperCase());
//        String S="ABCDE";
//        byte b[];
//        b=S.getBytes();
//        for (int i = 0; i < b.length; i++) 
//        {
//            System.out.print(b[i]+ " ");    
//        }
        
//        String email="[email protected]";
//        int m,n;
//        m=email.indexOf('@');
//        if(m==-1)
//            System.out.println("Invalid Email id ....");
//        else
//        {
//            n=email.indexOf('.', m+1);
//            if(n==-1)
//                System.out.println("Invalid Email id ....");
//            else
//                System.out.println("Valid Email ... Wel come");
//        }
        
        
       //String S=new String("Wel come in dataflair free java course");
       
       //char ch[];
//       ch=S.toCharArray();
//       for(int i=0;i<ch.length;i++)
//        System.out.println(ch[i]);
            
       
//           System.out.println(S.indexOf("java"));
//           System.out.println(S.toUpperCase());
//          int n,i,count=0;
//           n=S.indexOf('e',8);
//          System.out.println(n);
//       
       
       
        //
        // length method
        //n=S.length();
        //System.out.println("Length of String: "+n);
        //char At
       // System.out.println(S.charAt(5));
       //Space Count
//     for(i=0;i<S.length();i++)   
//     {
//            if(S.charAt(i)==' ')
//               count++;
//     }
//        System.out.println("Total Space : "+count);
//            char ch;
//       for(i=0;i<S.length();i++)   
//       {
//           ch=S.charAt(i);
//        if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u')   
//            count++;
//       }
//          System.out.println("Total Vowel : "+count);
//       for(i=S.length()-1;i>=0;i--)
//          System.out.print(S.charAt(i));

    }
    
}

 

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