String Example-1

Enter a String:
Nataraja123b? {b"
String without number & special character:Natarajabb
String without number:Natarajab? {b"

String without character:123

===========================================

package com.nataraja.b;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class RemoveNumber {
public static void main(String[] args) throws IOException {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter a String:");
String s=br.readLine();
removeNumberSpecialChar(s);
removeNumber(s);
removeChar(s);
}

public static void removeNumberSpecialChar(String s){
StringBuffer res=new StringBuffer();
for(int i=0;i<s.length();i++){
if(s.charAt(i)>='a'&&s.charAt(i)<='z'||s.charAt(i)>='A'&&s.charAt(i)<='Z'){
res.append(s.charAt(i));
}
}
System.out.println("String without number & special character:"+res.toString());
}

public static void removeNumber(String s){
StringBuffer res=new StringBuffer();
for(int i=0;i<s.length();i++){
if(!(s.charAt(i)>='0'&&s.charAt(i)<='9')){
res.append(s.charAt(i));
}
}
System.out.println("String without number:"+res.toString());
}

public static void removeChar(String s){
StringBuffer res=new StringBuffer();
for(int i=0;i<s.length();i++){
if((s.charAt(i)>='0'&&s.charAt(i)<='9')){
res.append(s.charAt(i));
}
}
System.out.println("String without character:"+res.toString());
}
}