Java_IO流_读写文件

package test;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Test {
	public static void main(String[] args) throws IOException,
			InterruptedException {
		String file = "c:" + File.separator + "eclipse" + File.separator
				+ "test.txt";
		String charset = "UTF-8";
		writeToFile(file, charset);
		Thread.sleep(1000);
		readFromFile(file, charset);
	}

	private static void readFromFile(String file, String charset)
			throws IOException {
		FileInputStream inputStream = new FileInputStream(file);
		InputStreamReader reader = new InputStreamReader(inputStream, charset);
		StringBuffer buffer = new StringBuffer();
		char[] buf = new char[64];
		int count = 0;
		try {
			while ((count = reader.read(buf)) != -1) {
				buffer.append(buf, 0, count);
			}
		} finally {
			reader.close();
		}
		System.out.println(buffer);

	}

	private static void writeToFile(String file, String charset)
			throws IOException {

		FileOutputStream outputStream = new FileOutputStream(file);
		OutputStreamWriter writer = new OutputStreamWriter(outputStream,
				charset);
		try {
			writer.write("这是要保存的中文字符");
		} finally {
			writer.close();
		}
	}
}

输出：

这是要保存的中文字符