Java从文件路径中获取文件名的几种方法
举例:String fName =” G:\Java_Source\navigation_tigra_menu\demo1\img\lev1_arrow.gif ”
方法一:
1 File tempFile =new File( fName.trim()); 2 String fileName = tempFile.getName();
方法二:
String fName = fName.trim();
String fileName = fName.subString(fName.lastIndexOf("/")+1);
方法三:
1 String fName = fName.trim(); 2 3 String temp[] = fName.split("\\\\"); /**split里面必须是正则表达式,"\\"的作用是对字符串转义*/ 4 5 String fileName = temp[temp.length-1];
方法四:
1 String regEx ="[^\\\\:]+?\\..*$"; 2 String s = "G:lev1_arrow.gif"; 3 Pattern pat = Pattern.compile(regEx); 4 Matcher mat = pat.matcher(s); 5 boolean rs = mat.find(); 6 System.out.println(rs); 7 for(int i=0; i <= mat.groupCount(); i++){ 8 System.out.println(mat.group(i)); 9 }