apache common-lang
public static int countMatches(String str, String sub) {if (isEmpty(str) || isEmpty(sub)) {
return 0;
}
int count = 0;
int idx = 0;
while ((idx = str.indexOf(sub, idx)) != -1) {
count++;
idx += sub.length();
}
return count;
}
public static boolean isEmpty(String str) {
return str == null || str.length() == 0;
}
public class Test {
public staticboolean isEmpty(String str){
return str == null || str.length()==0;
}
public static int countMatchesStr(String str, String substr){
if(isEmpty(str)&&isEmpty(substr)){
return -1;
}
int count = 0;
int index = 0;
while ((index = str.indexOf(substr, index)) != -1) {
count++;
index+=substr.length();
}
// index = str.indexOf(substr, index);
// while(index != -1){
//
// count++;
//
// index += substr.length();
//
// index = str.indexOf(substr, index);
// }
return count;
}
public static voids(Object o){
System.out.println(" input======= :"+o);
}
public static void main(String[] args) {
Test.s(Test.countMatchesStr("niuniusfsniskdfkjdskjfsdfniuniuniu", "niu"));
}
}
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