StrUtil.java
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package com.example.mina.util;
public class StrUtil {
private static final String[] EMPTY_ARRAY = new String[0];
public static void main(String[] args) {
System.out.println(toInt("93"));
// System.out.println(parseCommaInts("2a"));
}
public static int[] parseCommaInts(String str) {
if (str == null) {
return new int[0];
}
String[] ss = str.split(",");
int[] ids = new int[ss.length];
int count = 0;
for (int i = 0; i < ss.length; i++) {
int p = toInt(ss[i]);
ids[i] = p;
if (p >= 0) {
count++;
}
}
if (count < ss.length) {
int[] ids2 = new int[count];
count = 0;
for (int i = 0; i < ss.length; i++) {
if (ids[i] >= 0) {
ids2[count++] = ids[i];
}
}
ids = ids2;
}
return ids;
}
public static int toInt(String s) {
if (isEmpty(s)) {
return -1;
}
try {
float f = Float.parseFloat(s.trim());
return (int) f;
} catch (Exception e) {
e.printStackTrace();
return -1;
}
}
public static void printArray(String[] ssss) {
if (ssss == null) {
System.out.println(" -- NULL --");
}
for (String s : ssss) {
System.out.println(s);
}
}
public static boolean isEmpty(String s) {
return s == null || s.trim().isEmpty();
}
}