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StringBufferLib.java

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package com.testing250.JavaDay2;

import java.util.Scanner;

public class StringBufferLib {

String v1="test data";

StringBuffer sb=new StringBuffer(v1);

Scanner c = new Scanner(System.in);

// create a stringbuffer and store the data , display the data

public void sb1() {

//String v1="test data";

System.out.println(sb);

}

// Taking input

public void sb2() {

String s1 = c.nextLine();

StringBuffer sb1 = new StringBuffer(s1);

System.out.println(sb1);

}

// Append

public void TestAppend() {

String data = "1234";

StringBuffer sb3 = new StringBuffer(data);

System.out.println(sb3.append("56464"));

System.out.println(sb3);

}

public String PerformReverse(String Str) {

StringBuffer sb3 = new StringBuffer(Str);

System.out.println(sb3);

StringBuffer sb4 = sb3.reverse();

String val4 = sb4.toString();

return val4;

}

public void Delete_from_buffer() {

StringBuffer sb5 = new StringBuffer("Test automation framework");

sb5.delete(5, 14);

System.out.println(sb5);

}

public void Insert_Into_Buffer() {

String v6 = "test data";

StringBuffer p = new StringBuffer(v6);

p.insert(5, "55992896 ");

System.out.println(p);

}

public static void main(String[] args) {

StringBufferLib o1= new StringBufferLib();

o1.sb1();

o1.sb2();

o1.TestAppend();

String result = o1.PerformReverse("hello123test");

System.out.println(result + "reversed data");

o1.Delete_from_buffer();

o1.Insert_Into_Buffer();

}