串的简单处理

Question

package com.rui.first;
public class demo {
    public static void main(String[] args) {
        String strb="you and me what   cpp2005program";
        System.out.println(StrLogin(strb));
    }
    public static String StrLogin(String str){
        char [] ch=str.toCharArray();
        StringBuilder strbuf=new StringBuilder(str);
        if ( (int)ch[0]>97 ) {
            ch[0]=(char)((int)ch[0]-32);
        }
        for (int i = 0; i < ch.length; i++) {
            if (ch[i]==' ') {
                if (ch[i+1] ==' ') {
                    System.out.println(strbuf.deleteCharAt(i+1).toString());
                    StrLogin(strbuf.deleteCharAt(i+1).toString());
                }else {
                    ch[i+1]=(char)((int)ch[i+1]-32);
                }
            }
        }
        return String.copyValueOf(ch);  
    }
}

把首字母换成大写，删除多余的空格.....可结果是:
you and me what cpp2005program
you and me what cp2005program
You And Me What Cpp2005program