java socket包

char[] rsponseCount = getChar(8);
       rsponseCount[0]='1';
       rsponseCount[1]='0';
       rsponseCount[2]='0';
       StringBuffer sb =new StringBuffer();
       sb.append(pkgLen)

//生成初始化为空的char
    public char[] getChar(int num){
    char[] temp = new char[num];
    for(int i=0;i<num;i++)
    {
    temp[i]=' ';
    }
    return temp;
    }