java快速文件处理[Java编程]

//: InFile.java
// Shorthand class for opening an input file
package com.bruceeckel.tools;
import java.io.*;

public class InFile extends DataInputStream {
  public InFile(String filename)
    throws FileNotFoundException {
    super(
      new BufferedInputStream(
        new FileInputStream(filename)));
  }
  public InFile(File file)
    throws FileNotFoundException {
    this(file.getPath());
  }
} ///:~

//: PrintFile.java
// Shorthand class for opening an output file
// for human-readable output.
package com.bruceeckel.tools;
import java.io.*;

public class PrintFile extends PrintStream {
  public PrintFile(String filename)
    throws IOException {
    super(
      new BufferedOutputStream(
        new FileOutputStream(filename)));
  }
  public PrintFile(File file)
    throws IOException {
    this(file.getPath());
  }
} ///:~

//: OutFile.java
// Shorthand class for opening an output file
// for data storage.
package com.bruceeckel.tools;
import java.io.*;

public class OutFile extends DataOutputStream {
  public OutFile(String filename)
    throws IOException {
    super(
      new BufferedOutputStream(
        new FileOutputStream(filename)));
  }
  public OutFile(File file)
    throws IOException {
    this(file.getPath());
  }
} ///:~