public void set3() throws IOException {
for(int h=0;h<120;h++) {
File file = new File("G://test/ces"+h+".txt");
if(!file.exists()) {
file.createNewFile();
}else {
file.delete();
file.createNewFile();
}
FileWriter fw = new FileWriter(file,true);
BufferedWriter bw = new BufferedWriter(fw);
List<String> actions = Arrays.asList("riding", "running", "swimming");
List<String> userNames = Arrays.asList("lily", "tom", "bob");
List<String> times = Arrays.asList("2018-2-2", "2018-3-3");
for(int i= 0; i<1000; i++) {
for(String username: userNames) {
for(String action: actions) {
for(String time: times) {
String request = username+" is "+action+" on "+time+"\r\n";
bw.write(request);
}
}
}
}
bw.flush();
bw.close();
fw.close();
}
}
最终效果

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