上我有一些代碼來運行需要多長時間運行一個簡單的文件,一旦它完成我的結果輸出到公共用戶文件夾中的文件,一個簡單的運行時測試。它適用於我的電腦,但不適用於其他人。這是我的代碼JAR文件只工作在我的電腦
import java.awt.List;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Writer;
import javax.swing.*;
public class Speed {
public static void main(String[] args) {
final long length=100000000;
List merh = new List();
File filename = new File("C:\\Users\\Public\\filename.txt ");
final long startTime = System.currentTimeMillis();
for (int i = 0; i < length; i++) {
merh.add("Hereherehehrehrehrherh");
}
final long endTime = System.currentTimeMillis();
System.out.println("Total execution time: " + (endTime - startTime)
);
Writer writer = null;
try {
writer = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(filename), "utf-8"));
writer.write("Total execution time: " + (endTime - startTime));
} catch (IOException ex) {
// report
} finally {
try {writer.close();} catch (Exception ex) {/*ignore*/}
}
}
}
它是否給任何錯誤消息嗎?那臺計算機是否有C:\\ Users \\ Public \\ filename.txt文件? –