文件读写--DataStreamDemo

package test;public class Member {private String name;private int age;public Member() {}public Member(String name, int age) {this.name = name;this.age = age;}public void setName(String name) {this.name = name;}public void setAge(int age) {this.age = age;}public String getName() {return name;}public int getAge() {return age;}}

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package test;import java.io.*;public class DataStreamDemo {public static void main(String[] args) {Member[] members = { new Member("Justin", 90), new Member("momor", 95),new Member("Bush", 88) };try {DataOutputStream dataOutputStream = new DataOutputStream(new FileOutputStream(new File("D://FileStreamDemo1.txt")));for (Member member : members) {// 写入UTF字符串dataOutputStream.writeUTF(member.getName());// 写入int数据dataOutputStream.writeInt(member.getAge());}// 读出所有数据至目的地dataOutputStream.flush();// 关闭流dataOutputStream.close();DataInputStream dataInputStream = new DataInputStream(new FileInputStream(new File("D://FileStreamDemo1.txt")));// 读出数据并还原为对象for (int i = 0; i < members.length; i++) {// 读出UTF字符串String name = dataInputStream.readUTF();// 读出int数据int score = dataInputStream.readInt();members[i] = new Member(name, score);}// 关闭流dataInputStream.close();// 显示还原后的数据for (Member member : members) {System.out.printf("%s/t%d%n", member.getName(), member.getAge());}} catch (IOException e) {e.printStackTrace();}}}

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打印输出：

Justin    90
momor    95
Bush    88