package com.ots.project.monitor.job.util;
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import org.quartz.CronExpression;
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import java.text.ParseException;
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import java.util.Date;
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public class CronUtils {
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public static boolean isValid(String cronExpression) {
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return CronExpression.isValidExpression(cronExpression);
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}
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public static String getInvalidMessage(String cronExpression) {
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try {
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new CronExpression(cronExpression);
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return null;
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} catch (ParseException pe) {
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return pe.getMessage();
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}
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}
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public static Date getNextExecution(String cronExpression) {
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try {
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CronExpression cron = new CronExpression(cronExpression);
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return cron.getNextValidTimeAfter(new Date(System.currentTimeMillis()));
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} catch (ParseException e) {
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throw new IllegalArgumentException(e.getMessage());
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}
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}
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}
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