File file = new File("test.txt");
FileWriter writer = new FileWriter(file,true);
writer.write("my value");
writer.write("\r\n");
writer.flush();
writer.close();以上只是一种方法,java的IO操作很多方法,你应该对看看jdk文档,一切都很简单了。
FileWriter writer = new FileWriter(file,true);
writer.write("my value");
writer.write("\r\n");
writer.flush();
writer.close();以上只是一种方法,java的IO操作很多方法,你应该对看看jdk文档,一切都很简单了。
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
public class CSDN3 {
public static void main(String args[])
{
try {
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("C:\\a.txt")));
try {
writer.write("what you want to write");
} catch (IOException e) {
e.printStackTrace();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}}