Merge pull request 'Java 8 for 1.8 - 1.10' (#297) from java8 into master

Reviewed-on: SteamWar/BungeeCore#297
Reviewed-by: YoyoNow <jwsteam@nidido.de>

src/de/steamwar/bungeecore/Node.java

@@ -22,10 +22,7 @@ package de.steamwar.bungeecore;
 import net.md_5.bungee.api.ProxyServer;
 
 import java.io.*;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Iterator;
-import java.util.List;
+import java.util.*;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 import java.util.logging.Level;
@@ -34,6 +31,14 @@ public abstract class Node {
 
     private static final List<String> OPENJ9_ARGS = Arrays.asList("-Xgc:excessiveGCratio=80", "-Xsyslog:none", "-Xtrace:none", "-Xdisableexplicitgc", "-XX:+AlwaysPreTouch", "-XX:+CompactStrings", "-XX:-HeapDumpOnOutOfMemory", "-XX:+ExitOnOutOfMemoryError", "-Dlog4j.configurationFile=log4j2.xml");
     private static final double MIN_FREE_MEM = 4.0 * 1024 * 1024; // 4 GiB
+    private static final Set<String> JAVA_8 = new HashSet<>();
+    static {
+        JAVA_8.add("paper-1.8.8.jar");
+        JAVA_8.add("paper-1.10.2.jar");
+        JAVA_8.add("spigot-1.8.8.jar");
+        JAVA_8.add("spigot-1.9.4.jar");
+        JAVA_8.add("spigot-1.10.2.jar");
+    }
 
     private static final List<Node> nodes = new ArrayList<>();
     public static Node local = null;
@@ -74,7 +79,10 @@ public abstract class Node {
     public abstract double getLoad();
 
     protected void constructServerstart(File directory, List<String> cmd, String serverJar, String worldDir, String levelName, int port, String xmx, String... dParams) {
-        cmd.add("java");
+        if (JAVA_8.contains(serverJar))
+            cmd.add("/usr/lib/jvm/java-8-openj9-amd64/bin/java");
+        else
+            cmd.add("java");
 
         for(String param : dParams){
             cmd.add("-D" + param);