archived/projt-launcher/docs/handbook/help-pages/java-settings.md


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# Java Settings

### Java settings

In this page you can set the global Java settings.

![Java tab under ProjT Launcher settings](/projtlauncher/img/screenshots/projtlauncher_dark_settings_java.png)

## Memory

![Memory section of java tab under ProjT Launcher settings](/projtlauncher/img/screenshots/projtlauncher_dark_settings_java.png)

Java memory settings.
NOTE: MORE RAM ALLOCATED DOESN'T MEAN BETTER PERFORMANCE! In fact, in most use cases (except you're playing big modpacks) 4GB of ram allocated should be more than enough

## Java Runtime

![Java Runtime section of java tab under ProjT Launcher settings](/projtlauncher/img/screenshots/projtlauncher_dark_settings_java.png)

This is where the settings for the Java runtime live, like the location of the runtime and any Java arguments to use.

For information about how to get a correct Java version, see: [Installing Java](../getting-started/installing-java/).

**Auto-detect** will check your computer for all java versions and show you a list of them, the best one on top.

**Test** can be used to test the selected Java runtime along with your memory settings and JVM arguments without starting the game.

**Skip java compatibility checks** skips java compatibility checks at game launch

**Autodetect Java version** (Recommended) sets the correct java version at game launch (only looks with managed (see below) java and will change the java path in instance settings)

**Auto-download Mojang Java** (Recomnended) will automatically download needed the Java runtimes you need (needs the above setting to be on)

## Java Management

![Java Management section of java tab under ProjT Launcher settings](/projtlauncher/img/screenshots/projtlauncher_dark_settings_java.png)

This is where you can download and remove the java that were installed by ProjT Launcher.

![Java Download section of java tab under ProjT Launcher settings](/projtlauncher/img/screenshots/projtlauncher_dark_settings_java.png)