很简单,直接上代码
package demo;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
public class Demo {
public static void main(String[] args) {
File wFile = new File("test.txt");
try {
if (!wFile.exists()) {
wFile.createNewFile();
}
FileWriter writer = new FileWriter(wFile.getName(), true);
BufferedWriter out = new BufferedWriter(writer);
for (int i = 0; i < 2000; i++) {
out.write("100048\r\n");
}
out.flush();
out.close();
System.out.println("finish");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
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