Deprecate legacy Adopt distributions in v5

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 0cd196f2-1044-4d33-96bb-8e794a00b03c

src/distributions/adopt/installer.ts

@@ -59,12 +59,6 @@ export class AdoptDistribution extends JavaBase {
   protected async findPackageForDownload(
     version: string
   ): Promise<JavaDownloadRelease> {
-    if (this.jvmImpl === AdoptImplementation.Hotspot) {
-      core.notice(
-        "AdoptOpenJDK has moved to Eclipse Temurin https://github.com/actions/setup-java#supported-distributions please consider changing to the 'temurin' distribution type in your setup-java configuration."
-      );
-    }
-
     if (
       this.jvmImpl === AdoptImplementation.Hotspot &&
       this.temurinDistribution !== null

src/distributions/distribution-factory.ts

@@ -1,3 +1,4 @@
+import * as core from '@actions/core';
 import {JavaBase} from './base-installer';
 import {JavaInstallerOptions} from './base-models';
 import {LocalDistribution} from './local/installer';
@@ -48,11 +49,13 @@ export function getJavaDistribution(
       return new LocalDistribution(installerOptions, jdkFile);
     case JavaDistribution.Adopt:
     case JavaDistribution.AdoptHotspot:
+      warnIfAdoptDistributionIsDeprecated(distributionName, 'temurin');
       return new AdoptDistribution(
         installerOptions,
         AdoptImplementation.Hotspot
       );
     case JavaDistribution.AdoptOpenJ9:
+      warnIfAdoptDistributionIsDeprecated(distributionName, 'semeru');
       return new AdoptDistribution(
         installerOptions,
         AdoptImplementation.OpenJ9
@@ -90,3 +93,12 @@ export function getJavaDistribution(
       return null;
   }
 }
+
+function warnIfAdoptDistributionIsDeprecated(
+  distributionName: string,
+  replacement: string
+): void {
+  core.warning(
+    `The '${distributionName}' legacy AdoptOpenJDK distribution is deprecated and will be removed in setup-java v6. Please migrate to the '${replacement}' distribution.`
+  );
+}