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| package Java0326.Lecture15.FileIO;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class FileIOMain04 {
public static void write() {
char c = 'A';
int i = 97;
double d = 12.34;
FileOutputStream fos = null;
DataOutputStream dos = null;
try {
fos = new FileOutputStream("Iodata/test.dat");
dos = new DataOutputStream(fos);
dos.writeChar(c);
dos.writeInt(i);
dos.writeDouble(d);
System.out.println("쓰기완료...");
} catch (Exception e) {
e.printStackTrace();
} finally {
FileClose.close(dos);
FileClose.close(fos);
}
}
public static void read() {
FileInputStream fis = null;
DataInputStream dis = null;
try {
fis = new FileInputStream("Iodata/test.dat");
dis = new DataInputStream(fis);
// 순서 매우 중요!! 뒤바뀌면 데이터가 이상하게 불러옴.
char c = dis.readChar();
int i = dis.readInt();
double d = dis.readDouble();
System.out.println("읽어온 데이터 출력");
System.out.println("문자 : " + c);
System.out.println("정수 : " + i);
System.out.println("실수 : " + d);
} catch (Exception e) {
e.printStackTrace();
} finally {
FileClose.close(dis, fis);
}
}
public static void main(String[] args) {
read();
// write();
}
}
|
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| package Java0326.Lecture15.FileIO;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.Arrays;
public class FileIOMain05 {
public static void main(String[] args) {
write();
// read();
}
public static void read() {
FileInputStream fis = null;
DataInputStream dis = null;
try {
fis = new FileInputStream("dogInfo.txt");
dis = new DataInputStream(fis);
String data = dis.readUTF();
System.out.println(data);
String[] strArr = data.split(":");
System.out.println(Arrays.toString(strArr));
Dog d = new Dog(strArr[0], Integer.parseInt(strArr[1]), strArr[2]);
} catch (Exception e) {
} finally {
FileClose.close(dis, fis);
}
}
public static void write() {
Dog d = new Dog("앙꼬", 4, "푸들");
Dog d2 = new Dog("공주", 2, "요크셔테리어");
FileOutputStream fos = null;
DataOutputStream dos = null;
try {
fos = new FileOutputStream("dogInfo.txt");
dos = new DataOutputStream(fos);
dos.writeUTF(d.getName() + ":" + d.getAge() + ":" + d.getKind());
} catch (Exception e) {
} finally {
FileClose.close(dos, fos);
}
System.out.println("dogInfo에 저장완료...");
}
}
|
