Suggest user to install latest Java 8 to avoid potentional game crashing

HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java

@@ -227,29 +227,50 @@ public final class LauncherHelper {
             flag = true;
         }
 
-        if (!flag && java.getParsedVersion() < JavaVersion.JAVA_8) {
-            if (gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0) {
-                // Minecraft 1.13 and later versions only support Java 8 or later.
-                // Terminate launching operation.
-                Controllers.dialog(i18n("launch.advice.java8_1_13"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+        // Game later than 1.7.2 accepts Java 8.
+        if (!flag && java.getParsedVersion() < JavaVersion.JAVA_8 && gameVersion.compareTo(VersionNumber.asVersion("1.7.2")) > 0) {
+            Optional<JavaVersion> java8 = JavaVersion.getJREs().stream()
+                    .filter(javaVersion -> javaVersion.getParsedVersion() >= JavaVersion.JAVA_8)
+                    .max(Comparator.comparing(JavaVersion::getVersionNumber));
+            if (java8.isPresent()) {
+                setting.setJavaVersion(java8.get());
             } else {
-                // Most mods require Java 8 or later version.
-                Controllers.dialog(i18n("launch.advice.newer_java"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                if (gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0) {
+                    // Minecraft 1.13 and later versions only support Java 8 or later.
+                    // Terminate launching operation.
+                    Controllers.dialog(i18n("launch.advice.java8_1_13"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+                } else {
+                    // Most mods require Java 8 or later version.
+                    Controllers.dialog(i18n("launch.advice.newer_java"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                }
+                flag = true;
             }
-            flag = true;
         }
 
         // LaunchWrapper will crash because of assuming the system class loader is an instance of URLClassLoader.
         // cpw has claimed that he will make MinecraftForge of 1.13 and later versions able to run on Java 9.
-        if (!flag && java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.12.5")) < 0 && version.getMainClass().contains("launchwrapper")) {
+        if (!flag && java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.13")) < 0 && version.getMainClass().contains("launchwrapper")) {
             Optional<JavaVersion> java8 = JavaVersion.getJREs().stream().filter(javaVersion -> javaVersion.getParsedVersion() == JavaVersion.JAVA_8).findAny();
             if (java8.isPresent()) {
                 setting.setJavaVersion(java8.get());
-                Controllers.dialog(i18n("launch.advice.java9"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
             } else {
                 Controllers.dialog(i18n("launch.advice.java9"), i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+                flag = true;
+            }
+        }
+
+        // Minecraft 1.13 may crash when generating world on Java 8 earlier than 1.8.0_51
+        VersionNumber JAVA_8 = VersionNumber.asVersion("1.8.0.51");
+        if (!flag && gameVersion.compareTo(VersionNumber.asVersion("1.13")) >= 0 && java.getParsedVersion() == JavaVersion.JAVA_8 && java.getVersionNumber().compareTo(JAVA_8) < 0) {
+            Optional<JavaVersion> java8 = JavaVersion.getJREs().stream()
+                    .filter(javaVersion -> javaVersion.getVersionNumber().compareTo(JAVA_8) >= 0)
+                    .max(Comparator.comparing(JavaVersion::getVersionNumber));
+            if (java8.isPresent()) {
+                setting.setJavaVersion(java8.get());
+            } else {
+                Controllers.dialog(i18n("launch.advice.java8_51_1_13"), i18n("message.warning"), MessageBox.WARNING_MESSAGE, onAccept);
+                flag = true;
             }
-            flag = true;
         }
 
         if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
@@ -257,6 +278,7 @@ public final class LauncherHelper {
             Controllers.dialog(i18n("launch.advice.different_platform"), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
+
         if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
                 setting.getMaxMemory() > 1.5 * 1024) {
             // 1.5 * 1024 is an inaccurate number.
@@ -264,6 +286,7 @@ public final class LauncherHelper {
             Controllers.dialog(i18n("launch.advice.too_large_memory_for_32bit"), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
+        
         if (!flag && OperatingSystem.TOTAL_MEMORY > 0 && OperatingSystem.TOTAL_MEMORY < setting.getMaxMemory()) {
             Controllers.dialog(i18n("launch.advice.not_enough_space", OperatingSystem.TOTAL_MEMORY), i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;

HMCL/src/main/resources/assets/lang/I18N.properties

@@ -135,6 +135,7 @@ lang.default=Use system language
 
 launch.advice.different_platform=Your OS is 64-Bit but your Java is 32-Bit. The 64-Bit Java is recommended.
 launch.advice.java8_1_13=Minecraft 1.13 and later versions can only run on Java 8 or later.
+launch.advice.java8_51_1_13=Minecraft 1.13 may crash on Java 8 earlier than 1.8.0_51. You are supposed to install the latest version of Java 8.
 launch.advice.java9=You cannot launch Minecraft until game version is higher than 1.13 with Java 9 or later Java versions.
 launch.advice.newer_java=Java 8 is suggested, which can make game run more fluently. And many mods and Minecraft 1.12 and newer versions requires Java 8.
 launch.advice.not_enough_space=You have allocated too much memory, because the physical memory size is %dMB, your game probably crash. The launcher will try to launch it.

HMCL/src/main/resources/assets/lang/I18N_zh.properties

@@ -135,6 +135,7 @@ lang.default=跟隨系統語言
 
 launch.advice.different_platform=您的系統是 64 位的但是 Java 是 32 位的，推薦您安裝 64 位 Java。
 launch.advice.java8_1_13=Minecraft 1.13 只支持 Java 8 或更高版本，請使用 Java 8 或最新版本。
+launch.advice.java8_51_1_13=舊於 1.8.0_51 的 Java 可能會導致 Minecraft 1.13 崩潰。建議您到 https://java.com 安裝最新版的Java 8。
 launch.advice.java9=不高於 1.13 的安裝了 Mod 的 Minecraft 不支持 Java 9 或更高版本，請使用 Java 8。
 launch.advice.newer_java=檢測到您未使用 Java 8 及更新版本，Java 8 能使遊戲更流暢而且 Minecraft 1.12 及更新版本和很多 Mod 強制需要需要 Java 8。
 launch.advice.not_enough_space=您設置的內存大小過大，由於超過了系統內存大小 %dMB，所以可能影響遊戲體驗或無法啓動遊戲，啓動器仍會嘗試啓動。

HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties

@@ -135,6 +135,7 @@ lang.default=跟随系统语言
 
 launch.advice.different_platform=您的系统是 64 位的但是 Java 是 32 位的，推荐您安装 64 位 Java。
 launch.advice.java8_1_13=Minecraft 1.13 只支持 Java 8 或更高版本，请使用 Java 8 或最新版本。
+launch.advice.java8_51_1_13=旧于 1.8.0_51 的 Java 可能会导致 Minecraft 1.13 崩溃。建议您到 https://java.com 安装最新版的 Java 8。
 launch.advice.java9=不高于 1.13 的安装了 Mod 的 Minecraft 不支持 Java 9 或更高版本，请使用 Java 8。
 launch.advice.newer_java=检测到您未使用 Java 8 及更新版本，Java 8 能使游戏更流畅而且 Minecraft 1.12 及更新版本和很多 Mod 强制需要需要 Java 8。
 launch.advice.not_enough_space=您设置的内存大小过大，由于超过了系统内存大小 %dMB，所以可能影响游戏体验或无法启动游戏，启动器仍会尝试启动。

HMCLCore/src/main/java/org/jackhuang/hmcl/util/JavaVersion.java

@@ -63,6 +63,10 @@ public final class JavaVersion {
         return platform;
     }
 
+    public VersionNumber getVersionNumber() {
+        return VersionNumber.asVersion(longVersion.replace('_',  '.'));
+    }
+
     /**
      * The major version of Java installation.
      *