>这是String details
String details;
System.out.println(details); // gives the following :
"Address: 100 Main Street
City: CHICAGO State: IL Zip: 624324
Department ID: 890840809 ........
........................ "
我需要转换它,以便State
和Zip
从新行开始
Address: 100 Main Street
City: CHICAGO
State: IL
Zip: 624324
Department ID: 890840809 ........
这是我尝试过的
try {details = details.replaceAll(" State:.*", "nState:.*");
} catch (Exception e) {}
try {details = details.replaceAll(" Zip:.*", "nZip:.*");
} catch (Exception e) {}
你几乎做对了,你需要小的修改:
try {details = details.replaceAll(" State:(.*)", "nState:$1");
^^^^ ^^
} catch (Exception e) {}
try {details = details.replaceAll(" Zip:(.*)", "nZip:$1");
^^^^ ^^
} catch (Exception e) {}
请注意这些更改,您需要使用捕获组()
捕获值,以便可以通过 $1
在替换字符串中使用它们。
这是一个使用 PHP 的正则表达式 101 演示,但概念是相同的,请注意现在一切如何正常工作。