Java ?? ?? ??:
1 FileWritter? ??? ???
# ???? #FileWritter, ?? ???? ??? ??? ???. ????? ??? ?? ?? ?? ???? ? ???? ????.new FileWriter(file);??? FileWritter ???? ? ?? ?? ??? true(??) ?? ???? ?? ???? ?????. ??? ?? ?? ?? ? ???? ?????.
new FileWriter(file,true);?:
package com.andy.file;
import java.io.File;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.IOException;
public class AppendToFileTest
{
public static void main( String[] args )
{
try{
String content = "A cat will append to the end of the file";
File file =new File("test_appendfile.txt");
if(!file.exists()){
file.createNewFile();
}
//使用true，即進行append file
FileWriter fileWritter = new FileWriter(file.getName(),true);
BufferedWriter bufferWritter = new BufferedWriter(fileWritter);
bufferWritter.write(content);
bufferWritter.close();
System.out.println("finish");
}catch(IOException e){
e.printStackTrace();
}
}
}2, BufferedWriter writing File#???? #BufferedWriter? ?? ???? ???? ?? ??? ?????? ??? ???(???? ???? ??)? ????. ???? ?? ? ?? ??, ???? ?? ???? ??? ??? ?? ????.
?:
package com.andy.file;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
public class WriteToFileTest2 {
public static void main(String[] args) {
try {
String content = "a dog will be write in file";
File file = new File("test_appendfile2.txt");
if(!file.exists()){
file.createNewFile();
}
FileWriter fileWriter = new FileWriter(file.getAbsoluteFile());
BufferedWriter bw = new BufferedWriter(fileWriter);
bw.write(content);
bw.close();
System.out.println("finish");
} catch (IOException e) {
e.printStackTrace();
}
}
}
? ?? Java ??? ???
java?? ????? ??? Java?? ??? ???? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
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???? 13.0.1 ???
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