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Java 实例 - 向文件中追加数据
以下实例演示了使用 filewriter 方法向文件中追加数据: Main.java 文件 import java . io .*;
public class Main {
public static void main ( String [ ] args ) throws Exception {
try {
BufferedWriter out = new BufferedWriter ( new FileWriter ( " filename " ) ) ;
out . write ( " aString1
" ) ;
out . close ( ) ;
out = new BufferedWriter ( new FileWriter ( " filename " , true ) ) ;
out . write ( " aString2 " ) ;
out . close ( ) ;
BufferedReader in = new BufferedReader ( new FileReader ( " filename " ) ) ;
String str ;
while ( ( str = in . readLine ( ) ) != null ) {
System . out . println ( str ) ;
}
in . close ( ) ;
}
catch ( IOException e ) {
System . out . println ( " exception occoured " + e ) ;
}
}
} |
以上代码运行输出结果为:
aString1
aString2
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[这个贴子最后由 flybird 在 2020-01-26 17:17:00 重新编辑]
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