重定向就可以了//: c11:Redirecting.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Demonstrates standard I/O redirection.
import java.io.*;public class Redirecting {
// Throw exceptions to console:
public static void main(String[] args)
throws IOException {
BufferedInputStream in =
new BufferedInputStream(
new FileInputStream(
"Redirecting.java"));
PrintStream out =
new PrintStream(
new BufferedOutputStream(
new FileOutputStream("test.out")));
System.setIn(in);
System.setOut(out);
System.setErr(out); BufferedReader br =
new BufferedReader(
new InputStreamReader(System.in));
String s;
while((s = br.readLine()) != null)
System.out.println(s);
out.close(); // Remember this!
}
} ///:~
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Demonstrates standard I/O redirection.
import java.io.*;public class Redirecting {
// Throw exceptions to console:
public static void main(String[] args)
throws IOException {
BufferedInputStream in =
new BufferedInputStream(
new FileInputStream(
"Redirecting.java"));
PrintStream out =
new PrintStream(
new BufferedOutputStream(
new FileOutputStream("test.out")));
System.setIn(in);
System.setOut(out);
System.setErr(out); BufferedReader br =
new BufferedReader(
new InputStreamReader(System.in));
String s;
while((s = br.readLine()) != null)
System.out.println(s);
out.close(); // Remember this!
}
} ///:~
String aa=上面转化成String类型的System.err 用.toString();
FileOutputStream out=new FileOutputStream("err.txt");
PrintStream p=new PrintStream(out);
p.println(aa);
p.close;
可以了