commons之CharSetUtils

package com.likai;

import org.apache.commons.lang3.CharSetUtils;

public class CharSetUtilsDemo {
	
	private static final String s = "Hello word !";
	private static final String[] s1 = new String[]{"1","2","a","F","he","ord"};
public static void main(String[] args) {
	
	/*
	 * 返回符合输入字符范围的字符数.
	 * <pre>
     * CharSetUtils.count(null, *)        = 0
     * CharSetUtils.count("", *)          = 0
     * CharSetUtils.count(*, null)        = 0
     * CharSetUtils.count(*, "")          = 0
     * CharSetUtils.count("hello", "k-p") = 3
     * CharSetUtils.count("hello", "a-e") = 1
     * </pre>
	 */
	System.out.println("count:"+CharSetUtils.count(s, "a-e"));
	
	/*
	 * 返回符合输入字符数组返回的字符数.
	 */
	System.out.println("count 数组:"+CharSetUtils.count(s, s1));
	
	/*
	 * 删除字符串里包含给定字符串里的所有字符.
	 * <pre>
     * CharSetUtils.delete(null, *)        = null
     * CharSetUtils.delete("", *)          = ""
     * CharSetUtils.delete(*, null)        = *
     * CharSetUtils.delete(*, "")          = *
     * CharSetUtils.delete("hello", "hl")  = "eo"
     * CharSetUtils.delete("hello", "le")  = "ho"
     * </pre>
	 */
	System.out.println("delete :"+CharSetUtils.delete(s, "ewod"));
	
	/*
	 * 
	 * 删除字符串里包含给定数组的所有字符.
	 */
	System.out.println("delete2 :"+CharSetUtils.delete(s, s1));
	
	
	/*
	 * 返回给定字符串里包含的字符串.
	 * <pre>
     * CharSetUtils.keep(null, *)        = null
     * CharSetUtils.keep("", *)          = ""
     * CharSetUtils.keep(*, null)        = ""
     * CharSetUtils.keep(*, "")          = ""
     * CharSetUtils.keep("hello", "hl")  = "hll"
     * CharSetUtils.keep("hello", "le")  = "ell"
     * </pre>
	 */
	System.out.println("keep 1:"+CharSetUtils.keep(s, "e"));
	
	/*
	 * 返回给定字符数组里包含的字符串.
	 */
	System.out.println("keep 2:"+CharSetUtils.keep(s, s1));
	
	/*
	 * 排除给定范围内相同的字符并显示字符串.
	 * * <pre>
     * CharSetUtils.squeeze(null, *)        = null
     * CharSetUtils.squeeze("", *)          = ""
     * CharSetUtils.squeeze(*, null)        = *
     * CharSetUtils.squeeze(*, "")          = *
     * CharSetUtils.squeeze("hello", "k-p") = "helo"
     * CharSetUtils.squeeze("hello", "a-e") = "hello"
     * </pre>
	 */
	System.out.println("squeeze:"+CharSetUtils.squeeze(s, "a-z"));
	
	/*
	 * 排除给定范围内相同的字符并显示字符串.
	 */
	System.out.println("squeeze2:"+CharSetUtils.squeeze(s, s1));
	
	
	
}
}