使用
FileInputStream
和處理文件FileOutputStream
。 我正在閱讀 Schildt 的書,並開始處理文件。此範例表示您需要從命令列執行該程式並輸入檔案名稱。但我正在 IntelliJ 學習。如何透過指定檔案路徑來處理檔案?這是一個例子:
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class CopyFile {
public static void main(String[] args) {
int i;
FileInputStream fin;
FileOutputStream fout;
if (args.length != 2) {
System.out.println("Usage: CopyFile From To.");
return;
}
try {
fin = new FileInputStream(args[0]);
} catch (FileNotFoundException exc) {
System.out.println("Input file not found.");
return;
}
try {
fout = new FileOutputStream(args[1]);
} catch (FileNotFoundException exc) {
System.out.println("Error opening output file.");
try {
fin.close();
} catch (IOException exc2) {
System.out.println("Error closing input file.");
}
return;
}
try {
do {
i = fin.read();
if (i != -1) fout.write(i);
} while (i != -1);
} catch (IOException exc) {
System.out.println("Fi;e error.");
}
try {
fin.close();
} catch (IOException exc) {
System.out.println("Error closing input file.");
}
try {
fout.close();
} catch (IOException exc) {
System.out.println("Error closing output file.");
}
}
}
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