File file = new File("d:test")
File[] files = file.listFiles()
for(int i=0i<files.lengthi++){
File tmp = files[i]
if(tmp.toString().endsWith(".txt")){
tmp.delete()
}
}
简单粗暴
File file = new File("d:test")File[] files = file.listFiles()
for(int i=0 i<files.length i++){
File tmp = files[i]
if(tmp.toString().endsWith(".txt")){
tmp.delete()
}
}
最简单的删掉创建新的空文件。File file = new File("./my.txt")
file.delete()
file.createNewFile()
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