Java檔案讀寫

2021-08-22 06:12:34 字數 1876 閱讀 7071

file file = new file("text.txt");//只是file本身,不能進行讀寫

//********寫入*********//

printwriter printwriter = null;

try catch (filenotfoundexception e) finally

//********讀取*********//

//******寫入*******//

fileoutputstream fileoutputstream = null;

try catch (ioexception e) finally catch (ioexception e)

} //*****讀取********//

fileinputstream inputstream = null;

try

} catch (exception e) finally catch (exception e2)

}

//********寫入*********//

dataoutputstream dataoutputstream = null;

try catch (exception e) finally catch (ioexception e)

} //********讀取*********//

datainputstream datainputstream = null;

try catch(eofexception e) catch (exception e) finally catch (ioexception e)

}

減少磁碟的讀寫次數來提高輸入輸出的速度

//********寫入*********//

bufferedoutputstream bufferedoutputstream = null;

try catch (exception e) finally catch (ioexception e)

} //********讀取*********//

bufferedinputstream bufferedinputstream = null;

try

} catch (exception e) finally catch (ioexception e)

}

讀寫序列化(serializable)物件

public class main  catch (exception e)  finally  catch (ioexception e) 

} //******讀取*****//

objectinputstream objectinputstream = null;

try catch (exception e) finally catch (ioexception e)

} }}class a implements serializable

}

randomaccessfile randomaccessfile = null;

try catch (exception e) finally catch (ioexception e)

}

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