privateStringreadFile(String file)throwsIOException{ BufferedReader reader =newBufferedReader(newFileReader (file)); String line =null; StringBuilder stringBuilder =newStringBuilder(); String ls = System.getProperty("line.separator"); try{ while((line = reader.readLine()) !=null) { stringBuilder.app...
1.split(“s”) 以字符s为分隔线,分隔后返回字符数组; 2.split(“\s”)以碰到的每个空格、换行符、回车为分隔线,如遇到连续多个空格、换行符、回车就会连续划分,分隔后返回字符数组; 3.split(“\s+”)以空格、换行符、回车为分隔线,相邻的多个空格、换行符、回车仍然视为只有一个,分隔后返回字符数组。
public void read() { String file = FileUtil.readFile("/Users/Desktop/my.cnf"); String[] split = file.split(";"); for(String s: split) { if(!s.contains("#")) { // 去掉注释 System.out.println("读取到的文件:"+ s); } } } // 修改文件内容 @GetMapping("/update") public voi...
public class PhoneNumber { private int areaCode; private String prefix; private String lineNumber; @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + areaCode; result = prime * result + ((lineNumber == null) ? 0 : lineNumber.hashCode(...
1.创建文件 import java.io.File; import java.io.IOException; public class CreateFileExample { public static void main( String[] args ) { try { File file =
Synopsis: Regression - jar command changes file permissions. Due to a regression, the permissions of any jar file updated with the jar command are changed to read and write by user only. The workaround is to use the chmod command on the affected file to allow access by other and world. ...
wordCount += text.getLiteral().split("\\W+").length; // Descend into children (could be omitted in this case because Text nodes don't have children). visitChildren(text); } } Source positions If you want to know where a parsed Node appeared in the input source text, you can reque...
the Java language recognizes this need by allowing strings of unbounded size and content; on the other hand, it embodies a design default that strings should be small enough to denote on a single line of a source file (surrounded by " characters), and simple enough to escape easily. This ...
The text components have a model-view split. A text component pulls together the objects used to represent the model, view, and controller. The text document model may be shared by other views which act as observers of the model (e.g. a document may be shared by multiple components). ...
String[] results = str.split(","); 数据结构 重置数组大小: int[] myArray = new int[10]; int[] tmp = new int[myArray.length + 10]; System.arraycopy(myArray, 0, tmp, 0, myArray.length); myArray = tmp; 集合遍历: for (Iterator it = map.entrySet().iterator();it.hasNext();...