54 lines
2.4 KiB
Java
54 lines
2.4 KiB
Java
package com.boydti.fawe.bukkit.util;
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import com.sk89q.worldedit.internal.util.LogManagerCompat;
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import org.apache.logging.log4j.Logger;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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public class JavaVersionCheck {
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private static final Logger LOGGER = LogManagerCompat.getLogger();
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private static int checkJavaVersion() {
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String javaVersion = System.getProperty("java.version");
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final Matcher matcher = Pattern.compile("(?:1\\.)?(\\d+)").matcher(javaVersion);
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if (!matcher.find()) {
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LOGGER.warn("Failed to determine Java version; Could not parse: {}", javaVersion);
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return -1;
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}
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final String version = matcher.group(1);
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try {
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return Integer.parseInt(version);
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} catch (final NumberFormatException e) {
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LOGGER.warn("Failed to determine Java version; Could not parse {} from {}", version, javaVersion, e);
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return -1;
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}
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}
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public static void checkJvm() {
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if (checkJavaVersion() < 11) {
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LOGGER.warn("************************************************************");
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LOGGER.warn("* WARNING - YOU ARE RUNNING AN OUTDATED VERSION OF JAVA.");
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LOGGER.warn("* FASTASYNCWORLDEDIT WILL STOP BEING COMPATIBLE WITH THIS VERSION OF");
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LOGGER.warn("* JAVA WHEN MINECRAFT 1.17 IS RELEASED.");
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LOGGER.warn("*");
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LOGGER.warn("* Please update the version of Java to 11. When Minecraft 1.17");
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LOGGER.warn("* is released, support for versions of Java prior to 11 will");
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LOGGER.warn("* be dropped.");
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LOGGER.warn("*");
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LOGGER.warn("* Current Java version: {}", System.getProperty("java.version"));
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LOGGER.warn("************************************************************");
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}
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if (checkJavaVersion() >= 15) {
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LOGGER.warn("************************************************************");
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LOGGER.warn("* FastAsyncWorldEdit uses Nashorn for the craftscript engine.");
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LOGGER.warn("* Within Java 15, Nashorn has been removed from Java.");
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LOGGER.warn("* Until we add a suitable workaround, you should stick to Java 11");
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LOGGER.warn("* to use all features of FastAsyncWorldEdit.");
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LOGGER.warn("************************************************************");
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}
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}
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}
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