把字符窜换为char[],然后Character有方法判断是否为字符窜!并不会很麻烦?
char[] cr = str.toCharArray();
boolean status = true;
for(int i = 0; i < cr.length; i++){
if(!Character.isDigit(c[i])) {
status = false;
break;
}
}
char[] cr = str.toCharArray();
boolean status = true;
for(int i = 0; i < cr.length; i++){
if(!Character.isDigit(c[i])) {
status = false;
break;
}
}
try{
Integer.parseInt(s);
return true;
}
catch(Exception e){
return false;
}
}