import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
1.原始的方法
public class OutputStreamTest {
public static void main(String[] args) {
File file =new File ( "D:"+File.separator+"输入输出流"
+File.separator+"输入流"+File.separator+"输出流"+File.separator+"Hello.txt");
//判断目录是否存在，若不存在，自己创建
File parent=file.getParentFile ();
if(!parent.exists ()){
parent.mkdirs();
}
FileOutputStream outputStream=null;
try {
outputStream=new FileOutputStream ( file );
outputStream.write ( 65 );
outputStream.write ( 97 );
outputStream.write ( 99 );
String str="I 哎@￥& _!！\n";
byte[] strByte=str.getBytes ();
outputStream.write ( strByte );
outputStream.flush ();
} catch (java.io.IOException e) {
e.printStackTrace ( );
}finally {
if (outputStream != null) {
try {
outputStream.close ( );
} catch (IOException e) {
e.printStackTrace ( );
}
}
}
}
}
2.采用自动关闭的方法
public class OutputStreamTest {
public static void main(String[] args) {
File file = new File ( "D:" + File.separator + "输入输出流"
+ File.separator + "输入流" + File.separator + "输出流" + File.separator + "Hello.txt" );
File parent = file.getParentFile ( );
if (!parent.exists ( )) {
parent.mkdir ( );
}
try (FileOutputStream outputStream = new FileOutputStream ( file, true )) {
outputStream.write ( 75 );
outputStream.write ( 90 );
outputStream.write ( 100 );
String str="我不黑浮游！!";
byte[] strByte=str.getBytes ();
outputStream.write ( strByte );
} catch (FileNotFoundException e) {
e.printStackTrace ( );
} catch (IOException e) {
e.printStackTrace ( );
}
}
}
