Then you can catch it when you transform. Then deal with it.
Import java.io.bufferedreader;
Import java.io.inputstreamreader;
/**
* Class Description: enter a string of numbers in this class.
* Numbers will be entered in descending order and printed.
*/
Public taxis {
/*
*blankNum records the number of spaces.
*intNums[] records the value of a string segment with an array.
*input records the input string.
*/
int int nums[]；
String[] is empty;
String input;
/**
* function: getInputString ()
* Function: record the input string.
*/
public void getInputString() {
System.out.println ("Please enter a sort plastic number: enter format number+space+number");
Try {
buffered reader buffered reader = new buffered reader(new InputStreamReader(
system . in))；
input = buffered reader . readline()；
}catch (exception e) {
}
}
/**
* function: filterSpace ()
* Function: filter out the spaces before and after the string and those with more than two spaces in the middle to be calculated.
*/
public void filterSpace() {
/*
* Delete spaces at both ends of the string.
*trim () function removes spaces at the beginning and end of the string.
* Use format: str = str.trim ()
*/
input = input.trim()。
/*
* Read the string in turn, and intercept the string when two or more spaces are found.
* Enter input+space+intercepted string after the intercepted string.
*/
for(int I = 0； I & ltinput.length (). i++) {
if(input . charat(I)= " & amp； & ampinput . charat(I+ 1)= ' '){
input = input.substring(0，I)+" "+input . substring(I+ 1，input . length())；
I-；
}
}
}
/**
* Function: setArray ()
* function: separate strings with spaces and convert the segmented contents into numeric types.
*/
public boolean setArray() {
/*
* Divide the string into segments with spaces, and record the contents of each segment in an array string of text type.
*/
string[]string = input . split(" ")；
/*
* Convert the text array type to an integer.
*/
Boolean flag = true;
int nums = new int[string . length]；
for(int I = 0； I< string. Length; i++){
Try {
int nums[I]= integer . parse int(string[I])；
} catch (Exception ex) {
System.out.println ("input error, please re-enter:");
flag = false
}
}
Return flag;
}
/**
* function: sortedIntDes ()
* Function: Compare sizes and sort from small to large.
*/
public void sortedIntDes() {
for(int I = 0； I & ltintNums.lengthi++){
for(int j = I+ 1； j & ltintNums.lengthj++){
if(intNums[I]& gt； intNums[j]){
int intTemp
int temp = int nums[j]；
int nums[j]= int nums[I]；
int nums[I]= int temp；
}
}
}
}
/**
* function: printArray ()
* print out the arranged numbers.
*/
public void printArray() {
for(int I = 0； I & ltintNums.lengthi++){
System.out.println ("Numbers from small to large:"+int nums [i]+"");
}
}
public static void main(String[]arge){
Taxi taxi = new taxi ();
for(； ; ){
taxis . getinputstring()；
taxis . filter space()；
if(taxis.setArray()){
taxis . sortedintdes()；
taxis . print array()；
}
}
}
}