StringBuffer / StringBuilder - Example

Examples of StringBuffer

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import java.util.*;

public class StrBuf

    {

        public static void main(String[] args)

            {

                Scanner Sc=new Scanner(System.in);

                String S;

                System.out.print("\tEnter a String : ");

                S=Sc.nextLine();

                StringBuffer Sb = new StringBuffer(S);

                System.out.println("\tInput String '"+S+"'");

                StrBuf Buf=new StrBuf();

                Buf.AID(Sb);

            }

        void AID(StringBuffer Sb)

            {

                Sb.insert(11," A");

                System.out.println("\tAfter Insert 'A ' the new String  '"+Sb+"'");

                Sb.append(" AND THERE'S A WAY");

                System.out.println("\tAfter Append '"+Sb+"'");

                Sb.delete(18,22);

                System.out.println("\tAfter Deleting 'and ' the new String  '"+Sb+"'");

               

            }

    }

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Output:

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          Enter a String : IF THERE IS WILL

          Input String 'IF THERE IS WILL'

          After Insert 'A ' the new String  'IF THERE IS A WILL'

          After Append 'IF THERE IS A WILL AND THERE'S A WAY'

          After Deleting 'and ' the new String  'IF THERE IS A WILL THERE'S A WAY'

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Examples of StringBuilder

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import java.util.*;

    public class StrBld

        {

        public static void main(String[] args)

            {

                Scanner Sc=new Scanner(System.in);

                String S;

                System.out.print("\tEnter a String : ");

                S=Sc.nextLine();

                StringBuilder Sb = new StringBuilder(S);

                System.out.println("\tInput String '"+S+"'");

                StrBld Bld=new StrBld();

                Bld.AID(Sb);

            }

        void AID(StringBuilder Sb)

            {

                Sb.insert(11," A");

                System.out.println("\tAfter Insert 'A ' the new String  '"+Sb+"'");

                Sb.append(" AND THERE'S A WAY");

                System.out.println("\tAfter Append '"+Sb+"'");

                Sb.delete(18,22);

                System.out.println("\tAfter Deleting 'and ' the new String  '"+Sb+"'");

               

            }

    }

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Output:

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          Enter a String : IF THERE IS WILL

          Input String 'IF THERE IS WILL'

          After Insert 'A ' the new String  'IF THERE IS A WILL'

          After Append 'IF THERE IS A WILL AND THERE'S A WAY'

          After Deleting 'and ' the new String  'IF THERE IS A WILL THERE'S A WAY'

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