遍历文件夹

1.遍历文件

public static void main(String[] args) throws Exception {
        String filepath = "E:/IDEA/workspace/MyWorkspace/JavaTest";
        File file = new File(filepath);
        getfile(file);
    }
	public static void getfile(File file) {
        System.out.println(file.getAbsolutePath());
        File[] files = file.listFiles();
        for (File file1 : files) {
            if (file1.isDirectory()) {
                getfile(file1);
            } else {
                System.out.println(file1);
            }
      	  }
    	}

main

E:\IDEA\workspace\MyWorkspace\JavaTest
E:\IDEA\workspace\MyWorkspace\JavaTest\JavaTest.iml
E:\IDEA\workspace\MyWorkspace\JavaTest\src
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\LinkedBinaryTree.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Node.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\QuickSort.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Test.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Tree.java

2.使用文件过滤器寻找.java结尾的所有文件

public static void main(String[] args) throws Exception {
        String filepath = "E:/IDEA/workspace/MyWorkspace";
        File file = new File(filepath);
        getfile(file);
    }

    public static void getfile(File file) {
        //1.FileFilter	参数:File pathname(文件路径)
        /*File[] files = dir.listFiles(pathname->
                pathname.isDirectory() ||
                pathname.getName().toLowerCase().endsWith(".java")
        );*/
        ////2.FilenameFilter	参数:File dir,String name(文件路径和文件名)
        File[] files = file.listFiles((dir,name)->
                new File(dir,name).isDirectory() || name.toLowerCase().endsWith(".java")
        );
        for (File file1 : files) {
            if (file1.isDirectory()) {
                getfile(file1);
            } else {
                System.out.println(file1);
            }
        }
    }

E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\LinkedBinaryTree.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Node.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\QuickSort.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Test.java
E:\IDEA\workspace\MyWorkspace\JavaTest\src\com\Tree.java