在D盘中创建文件test.txt,文件中内容为:hello Java,然后利用流把该文件拷贝到E盘根目录中

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import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;


public class Change {
	public static void main(String[] args) throws IOException {
		FileWriter fw = new FileWriter("D:/tets.txt");
		fw.write("hello java");
		fw.close();
		FileInputStream fis = new FileInputStream("d:/tets.txt");
		FileOutputStream  fos  = new FileOutputStream("E:/tets.txt");
		byte[] b = new byte[1024];
		while(fis.read(b)!=-1)
		{
			fos.write(b);
		}
		fos.close();
		fis.close();
		
	}


}