[javaSE] 練習隊列線程和對象序列化，javase序列化

[javaSE] 練習隊列線程和對象序列化，javase序列化

主要練習了隊列數據結構，對象序列化和反序列化，多線程操作

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class QueueThreadDemp {
    public static StringQueue names;

    public static void main(String[] args) throws Exception {
        names=getQueueObj();
        // 子線程循環隊列
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (true) {
                    try {
                        Thread.sleep(5000);
                        names = QueueThreadDemp.getQueueObj();
                        System.out.println(names.toString());
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();

        // 讀取鍵盤輸入
        InputStream is = System.in;
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br = new BufferedReader(isr);

        while (true) {
            String name = br.readLine();
            names.push(name);
            
            File file = new File("E:\\queue.txt");
            FileOutputStream fos = new FileOutputStream(file);
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(names);
            oos.close();
            fos.close();
        }

    }

    public static StringQueue getQueueObj() throws Exception {
        File file = new File("E:\\queue.txt");
        if (file.exists() && file.length() > 0) {
            FileInputStream fis = new FileInputStream(file);
            ObjectInputStream ois = new ObjectInputStream(fis);
            names = (StringQueue) ois.readObject();
            ois.close();
            fis.close();
        } else {
            names = new StringQueue(5);
        }
        return names;
    }
}
//數組隊列
class StringQueue implements Serializable {
    private String[] mNames;
    private int index = 0;
    private int nums;

    public StringQueue(int nums) {
        mNames = new String[nums];
        this.nums = nums;
    }

    public void push(String name) {
        if (index >= nums) {
            pop();
        }
        mNames[index] = name;
        index++;
    }

    public void pop() {
        for (int i = 1; i < index; i++) {
            mNames[i - 1] = mNames[i];
        }
        index = index - 1;
    }

    public String toString() {
        String mes = "";
        for (String name : mNames) {
            mes += name + ",";
        }
        return mes;
    }
}

效果：