java - 如何为每个对象使用变量

Question

我有一个元素数组。我根据每个元素名称创建对象并调用一些 getter 函数。我正在制作的类的对象实际上是第三方库“Sigar”。

问题是我不想修改这个第三方库，因此我无法为每个对象保留单独的变量值。我需要想出一些方法来为每个对象保留单独的变量。

我希望我的描述能够解释我想要的内容。以下是我的代码

private long lastDiskCheck = 0;
private long lastDiskRead = 0;
private long lastDiskWrite = 0;
private String getDiskUsage() {
    try {
        List<FileSystem> result = new ArrayList<FileSystem>();
        org.hyperic.sigar.FileSystem[] fss = null;
        fss = sig.getFileSystemList();
        List<Integer> diskUsage = new ArrayList<Integer>();
        String ioStat = "";
        for (int i = 0; i<fss.length; i++) {
            FileSystem fs = fss[i];
            FileSystemUsage usage = sig.getFileSystemUsage(fs.getDirName());
            if (lastDiskCheck!=0) {
                long diff = (nanoTime() - lastDiskCheck)/1000000;
                long diffRead = usage.getDiskReadBytes() - lastDiskRead;
                long diffWrite = usage.getDiskWriteBytes() - lastDiskWrite;
                ioStat = String.format("(%d/%d kB/s)", diffRead/diff, diffWrite / diff);
            }
            lastDiskRead = usage.getDiskReadBytes();
            lastDiskWrite = usage.getDiskWriteBytes();
            lastDiskCheck = nanoTime();
            diskUsage.add((int)(usage.getUsePercent()*100));
        }
        return String.format("%d%% %s", (Collections.max(diskUsage)), ioStat);
    } catch (SigarException e) {
        e.printStackTrace();
    }
    return "n/a";
}

三个变量

private long lastDiskCheck = 0;
private long lastDiskRead = 0;
private long lastDiskWrite = 0;

更新循环内我不想要的每个对象。如何让每个对象保持不同？

Answer 1

public class MyClass {
    private long lastDiskCheck;
    private long lastDiskRead;
    private long lastDiskWrite;

    private YourObject object;

    public void setLastDiskCheck(lastDiskCheck){ // setter of lastDiskCheck
        this.lastDiskCheck = lastDiskCheck;
    }

    public long getLastDiskCheck(){ //getter of lastDiskCheck
        return lastDiskCheck;
    }
}

通过这种方法，您可以将每个对象保留在 MyClass 中，并为每个对象保留不同的值。