统计string中中英文数字出现的次数

//统计出现次数
public class TestChar {

public static void main(String[] args) {
String str ="zhongguo23234234福建省考虑福建师范jfafFS积分实际上";
int englishCount = 0;
int chineseCount = 0;
int digitCount = 0;
for(int i=0;i<str.length();i++){

char ch = str.charAt(i);

if( ch>='0'&&ch<='9'){
digitCount++;
}else if( (ch>='a'&&ch<='z')||(ch>='A'&&ch<='Z')){
englishCount++;
}else{
chineseCount++;
}

}
System.out.println(digitCount);
System.out.println(englishCount);
System.out.println(chineseCount);
}

}