Java简单文件处理

/**
* Created by z5139 on 2016/5/17 0017.
*/
public class IOtxt {
/**
* 读取数据
*/
public static String ReadData(String url) {
String buffer = null;
try {
FileReader read = new FileReader(new File(url));
StringBuffer sb = new StringBuffer();
char ch[] = new char[1024];
int d = read.read(ch);
while (d != -1) {
String str = new String(ch, 0, d);
sb.append(str);
d = read.read(ch);
}
buffer = sb.toString();
read.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buffer;

}

/**
* 写入数据
*/
public static boolean WriteData(String url, int content) {
BufferedWriter out = null;
boolean flag;
try {
File file = new File(url);
if (!file.exists()) {
file.createNewFile();
}
out = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(file, true)));
out.write(String.valueOf(content) + " ");
flag = true;
return flag;
} catch (Exception ex) {
System.out.println(ex);
flag = false;
return flag;
} finally {
try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

/**
* 创建文件
*/
public static boolean createFile(String url) throws Exception {
boolean flag = false;
File fileName = new File(url);
try {
if (!fileName.exists()) {
fileName.createNewFile();
flag = true;
}
} catch (Exception e) {
flag = false;
Log.e("tag", "创建失败");
}
return flag;
}

/**
* String转 int 数组
*/
public static int[] StringToInt(String a) {
String str[] = a.trim().split("\\s");
int recordInt[] = new int[str.length];
for (int i = 0; i < str.length; i++) {
recordInt[i] = Integer.parseInt(str[i]);
}
return recordInt;
}
/**
* 列出指定文件夹内路径
*/
public static String[] listFile(String path) {
File file = new File(path);
File[] tempList = file.listFiles();
String filepath[] = new String[tempList.length];
System.out.println("该目录下对象个数：" + tempList.length);
for (int i = 0; i < tempList.length; i++) {
if (tempList[i].isFile()) {
filepath[i] =  tempList[i].getName();
}
}
return filepath;
}
/**
* 列出指定文件夹内时间
*/
public static String[] listTime(String path) {
File file = new File(path);
File[] tempList = file.listFiles();
String time[] = new String[tempList.length];
System.out.println("该目录下对象个数：" + tempList.length);
for (int i = 0; i < tempList.length; i++) {
if (tempList[i].isFile()) {
time[i] =  tempList[i].getName().substring(0, 20);
}
}
return time;
}
/**
* 列出指定文件夹内HR
*/
public static String[] listHR(String path) {
File file = new File(path);
File[] tempList = file.listFiles();
String HR[] = new String[tempList.length];
System.out.println("该目录下对象个数：" + tempList.length);
for (int i = 0; i < tempList.length; i++) {
if (tempList[i].isFile()) {
HR[i] =  tempList[i].getName().substring(20,22);
}
}
return HR;
}
//删除空白文件
public static void deleteEmpty(String path){
File file = new File(path);
if (file.length() == 0){
file.delete();
}
}
//创建文件夹
public static void makeRootDirectory(String filePath) {
File file;
try {
file = <
4000
span class="hljs-keyword">new File(filePath);
if (!file.exists()) {
file.mkdirs();
}
} catch (Exception e) {
Log.i("error:", e + "");
}
}
}