设计一个程序，将给定的字符串型的数值输入数据中的无效零去掉，返回一个新的字符串

Integer.parseInt("");
捕获 NumberFormatException 异常就可以了

比如：
String str="000012";
try{
int inum=Integer.parseInt(ste);
}catch(NumberFormatException e){
System.out.println("wrong!");
}

package com.zhh.test;

public class SS {
public static String UString( String str) throws FormatException {
String strRec = "";
StringBuffer sb = new StringBuffer(str);

for ( int i = 0; i < sb.length(); i++){
char chA = sb.charAt(i);
if( (chA >= '0' && chA <= '9') || chA == '.'){

if(chA == '0'){
if( sb.charAt(i+1) != '0'){
strRec += chA;
}
}else{
strRec += chA;
}
}else{
throw new FormatException();

}
}
return strRec;
}

public static