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String a="123fsf¶á";
char[] b=a.toCharArray();//×Ö·û´®²ð·Ö³É×Ö·û
String bb = "";
//×Ö·ûºÏ²¢³É×Ö·û´®
for(int i=0; i<b.length;i++){
if(i == b.length-1){
bb += b[i];
}else{
bb += b[i]+"%";
}
}
System.out.println(bb);
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File file = new File(fileName);
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