javaIO读和写和创建文件夹的基础简单操作

导语：Java是一门面向对象编程语言，不仅吸收了C++语言的各种优点，还摒弃了C++里难以理解的`多继承、指针等概念，因此Java语言具有功能强大和简单易用两个特征。下面我们来看看javaIO读和写和创建文件夹的基础简单操作，希望对大家有所帮助。

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package e16; import ; import NotFoundException; import Reader; import Writer; import ception;

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public class FileUtil { public static final String PATH=roperty(""); public void cj(String path) { File file=new File(PATH+path); int index=xOf("."); if(index==-1) { if(!ts()) { rs(); } }else { int index2=IndexOf("/"); String string=path.substring(0, index2); if(!ts()) { File file2=new File(PATH+string); rs(); } } try { teNewFile(); } catch (IOException e) { // TODO Auto-generated catch block tStackTrace(); } } }

public class TestFileUtil {public static void main(String[] args) {

1	//读和写的初始化 FileReader fileReader=null; FileWriter fileWriter=null; try {

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//读和写的初始化 fileReader=new FileReader(file); ("/src/com/lanou/day18/"); fileWriter=new FileWriter(fileName); //将读出来的数据写入 int lenght=0; char[] context=new char[1024]; while((lenght=fileReader.read(context))!=-1) { e(context,0,lenght); }

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//完成后刷新 h(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block tStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block tStackTrace(); }finally { if(fileWriter!=null) { try {

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//关闭写入流 fileWriter.close(); } catch (IOException e) { // TODO Auto-generated catch block tStackTrace(); } } } }