日期:2014-05-20 浏览次数:20649 次
import java.io.*; public class Ex6_2 { public static void main(String arg[])throws IOException{ File f = new File("D:" + File.separator + "Hello.txt"); f.createNewFile(); s1 += "要添加的内容"; BufferedWriter output = new BufferedWriter(new FileWriter(f)); output.write(s1); output.close(); }
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write
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S1应该是String类型的变量,1楼可能忘了在S1前加String修饰
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String str=new String("自己要输入的内容");
File file = new File("D:\Hello.txt");
FileWriter writer=new FileWriter(file);
writer.write(str);
writer.close() ;
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File file=new File("c:/mulu.txt");
FileWriter filewriter=new FileWriter(file);
String s=new String();
filewrite.write(s);
filewrite.close();
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File对象不能写文件的,必须用流才可以写入,如FileWriter或FileOutputStream