java 寫出到檔案
阿新 • • 發佈:2019-02-10
//【1】建立輸出流檔案物件
FileOutputStream fos = new FileOutputStream("/Users/student/Desktop/DTW_Java.txt",true);
//【2】寫出檔案
for(int i=0;i<resultDemo.size();i++){
if(i%22==0){
String str="\r\n";
byte [] by = str.getBytes(); //把String型別轉為byte陣列
fos.write(by , 0, by.length);
}
for(int ii=0;ii < 3;ii++){
String str0 = String.valueOf(resultDemo.get(i).get(ii).doubleValue());
String str=str0+"\t";
byte [] by = str.getBytes(); //把String型別轉為byte陣列
fos.write(by, 0, by.length);
}
}
//【3】關流
fos.close();
System.out.println("寫入完畢");