JAVA进行基础的文件IO读写
1 import java.io.File; 2 import java.io.FileInputStream; 3 import java.io.FileNotFoundException; 4 import java.io.FileOutputStream; 5 import java.io.IOException; 6 7 public class TestIO { 8 9 public void testRead(String path){ 10 FileInputStream is = null; 11 File file = new File(path); 12 try { 13 is = new FileInputStream(file); 14 byte[] byteBuffer = new byte[is.available()]; 15 int read = 0; 16 while((read = is.read(byteBuffer))!= -1){ 17 System.out.write(byteBuffer, 0, read); 18 } 19 } catch (FileNotFoundException e) { 20 e.printStackTrace(); 21 } catch (IOException e) { 22 e.printStackTrace(); 23 }finally{ 24 try { 25 if(is!=null){ 26 is.close(); 27 } 28 } catch (IOException e) { 29 e.printStackTrace(); 30 } 31 } 32 } 33 34 public void testWrite(String content, String path){ 35 File file = new File(path); 36 try { 37 FileOutputStream os = new FileOutputStream(file); 38 byte[] byteBuffer = content.getBytes(); 39 os.write(byteBuffer, 0, byteBuffer.length); 40 os.flush(); 41 os.close(); 42 } catch (FileNotFoundException e) { 43 e.printStackTrace(); 44 } catch (IOException e) { 45 e.printStackTrace(); 46 } 47 } 48 49 public static void main(String[] args) { 50 TestIO io = new TestIO(); 51 io.testRead("src/test.txt"); 52 io.testWrite("this is a test", "src/test.txt"); 53 //io.testRead("src/test.txt"); 54 } 55 56 }
import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;
public class TestIO {public void testRead(String path){FileInputStream is = null;File file = new File(path);try {is = new FileInputStream(file);byte[] byteBuffer = new byte[is.available()];int read = 0;while((read = is.read(byteBuffer))!= -1){System.out.write(byteBuffer, 0, read);}} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}finally{try {if(is!=null){is.close();}} catch (IOException e) {e.printStackTrace();}}}public void testWrite(String content, String path){File file = new File(path);try {FileOutputStream os = new FileOutputStream(file);byte[] byteBuffer = content.getBytes();os.write(byteBuffer, 0, byteBuffer.length);os.flush();os.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public static void main(String[] args) {TestIO io = new TestIO();io.testRead("src/test.txt");io.testWrite("this is a test", "src/test.txt");//io.testRead("src/test.txt");}}
