java中怎样截取一个字符串中指定的字符串

String reg1 = ".*性别：([^\\|]*)\\|?.*";
String reg2 = ".*民族：([^\\|]*)\\|?.*";
String reg3 = ".*生日：([^\\|]*)\\|?.*";

String str = "性别：女士|民族：汉族|生日：1990-9-22";

String sex = str.replaceAll(reg1, "$1");
String mz = str.replaceAll(reg2, "$1");
String brith = str.replaceAll(reg3, "$1");
System.out.println (sex);
System.out.println (mz);
System.out.println (brith);

String string = 原字符串.substring(int start,int end);

String str = "房估字(2014)第YPQD0006号";
String jieguo = str.substring(str.indexOf("第")+1,str.indexOf("号"));本回答被提问者采纳