格式化字符串
String msgStr="my name is {0} and my age is {1};"; String result = MessageFormat.format(msgStr,"tom",20); System.out.println(result); //输出: my name is tom and my age is 20; /* 若是有单引号,不会做处理,并且已有的单引号也会被去掉 ***/ msgStr="my 'name' is '{0}' and my age is '{1}';"; result = MessageFormat.format(msgStr,"tom",20); System.out.println(result); //输出: my name is {0} and my age is {1}; /* 若是有单引号,做如下处理 ***/ msgStr="my ''name'' is ''{0}'' and my age is ''{1}'';"; result = MessageFormat.format(msgStr,"tom",20); System.out.println(result); //输出: my 'name' is 'tom' and my age is '20'; /* 也可用string.format处理 ***/ msgStr="my 'name' is '%s' and my age is '%d';"; result = String.format(msgStr,"tom",20); System.out.println(result); //输出: my 'name' is 'tom' and my age is '20';