java 去除或者替换字符串里面的数字或者字母

package testPattern;


import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class TestPattern {


/**
* @param args
*/
public static void main(String[] args) {
    removeDigital("b1a07f37558b36ee879eed2dfcbf6c");
    removeLetter("b1a07f37558b36ee879eed2dfcbf6c");
    replaceLetter("b1a07f37558b36ee879eed2dfcbf6c", "-");
}


/**
* 剔除数字
* @param value
*/
public static void removeDigital(String value){
    Pattern p = Pattern.compile("[\\d]");
    Matcher matcher = p.matcher(value);
    String result = matcher.replaceAll("");
    System.out.println(result);
}

/**
* 剔除字母
* @param value
*/
public static void removeLetter(String value){
    Pattern p = Pattern.compile("[a-zA-z]");
    Matcher matcher = p.matcher(value);
    String result = matcher.replaceAll("");
    System.out.println(result);
}

/**
* 替换
* @param value
* @param replacement
*/
public static void replaceLetter(String value, String replaceParam){
    Pattern p = Pattern.compile("[a-zA-z]");
    Matcher matcher = p.matcher(value);
    String result = matcher.replaceAll(replaceParam);
    System.out.println(result);
}


}