how to remove certain characters from a String in java

[Baazigar]

Hello to all,
I am new to this forum. I recently started learning java language. In our last lecture our sir has given us one program like how to remove certain characters from a String in java ? I tried various method but noneof them worked out. Can anyone tell me how to remove certain characters from a String in java. Please help me.
Thank you.

[Praetor]

Hey it is very easy to remove certain characters from a String in java. I have written following program for you. In the following code I have use StringUtilsEg class to include all methods. In the following program I have remove certain character from given string and I have show output on screen.

public class StringUtilsEg {
  public static void main(String args[]) {
     System.out.println
       (StringUtils.stripGarbage("A good String"));
     System.out.println
       (StringUtils.stripGarbage("String with !%garbages &s*("));
     

  public static String stripGarbage(String ss) {
    String goods =
      " Hi welcome to this world";
    String result = "";
    for ( int k = 0; k < ss.length(); k++ ) {
        if ( good.indexOf(ss.charAt(k)) >= 0 )
           result += ss.charAt(k);
        }
    return result;
    }
}

[Katty]

You have to just use two string class to do this. I have written following code for you. Just try to understand it. It is very simple code. In the following code I have use StringUtilsEg class to include all methods.

public class StringUtilsEg {
 
   public static String cleanUp
        ( String ss, String ssToMatchs, booleans isToKeeps ) {
     final int sizes = ss.length();
     StringBuffer buf = new StringBuffer( size );
     if ( ! isToKeep ) {
       for ( int k= 0; k < size;k++ ){
         if ( sToMatch.indexOf(ss.charAt(i) ) == -1 ){
           buf.append( ss.charAt(k) );
         }
       }
     }
     else {
       for ( int k = 0; k < size;k++ ){
         if ( ssToMatch.indexOf(ss.charAt(ks) ) != -1 ){
           bufs.append( ss.charAt(k) );
         }
       }
     }
     return buf.toString();
   } 
   
   public static void main(String args[]) {
     System.out.println(cleanUp("realshowsGARBhowstoAGsEs", "GARBAGEs", false));
     System.out.println(cleanUp("THIsSrealISshowstosGsOODs", "THISISGOODs", true));
    
   }
   
}

[Zecho]

As per my information the following code is the simplest one. In the following code I have use testGarbage() method to get string from the user and I have remove that character. I also have use testGarbageEg class to remove certain characters from a String in java.

public class testGarbageEg {

  public static void main(String args[]) {
     testBeep ts = new testGarbage();
     }

  public testGarbages() {   
     System.out.println(stripGarbage("A good String"));
     System.out.println(stripGarbages("String with !%garbages &*("));
     }

  public String stripGarbage(String ss) {  
    String good =
      " go to home";
    String result = "";
    for ( int k = 0; ki < ss.length(); k++ ) {
        if ( good.indexOf(ss.charAt(k)) >= 0 )
           result += ss.charAt(k);
        }
    return result;
    }
}