[Y-build] Prepare builds for Java-26 BETA

Move tests to targeted Java version Java-26.

Also drop the second MacOS test configuration and add Y-build tests for
Windows instead.

Additionally fix the computation of the temurin download URL and fix
installing tools on Windows.

Author: HannesWell

JenkinsJobs/YBuilds/Y_unit_tests.groovy

@@ -122,14 +122,24 @@ def pathOf(String path){
 def installTemurinJDK(String version, String os, String arch, String releaseType='ga') {
 	// Translate os/arch names that are different in the Adoptium API
 	if (arch == 'x86_64') {
-		arch == 'x64'
+		arch = 'x64'
 	}
-	return install('jdk', "https://api.adoptium.net/v3/binary/latest/${version}/${releaseType}/${os}/${arch}/jdk/hotspot/normal/eclipse")
+	if (os == 'macosx') {
+		os = 'mac'
+	} else if (os == 'win32') {
+		os = 'windows'
+	}
+	return install('jdk', "https://api.adoptium.net/v3/binary/latest/${version}/${releaseType}/${os}/${arch}/jdk/hotspot/normal/eclipse") + (os == 'mac' ? '/Contents/Home' : '')
 }
 
 def install(String toolType, String url) {
 	dir("${WORKSPACE}/tools/${toolType}") {
-		sh "curl -L ${url} | tar -xzf -"
+		def script = "curl -L ${url} | tar -xzf -"
+		if (isUnix()) {
+			sh script
+		} else { // Windows 10 and later has a tar.exe that can handle zip files (even read from std-in)
+			bat script
+		}
 		return "${pwd()}/" + sh(script: 'ls', returnStdout: true).strip()
 	}
 }

JenkinsJobs/buildConfigurations.json

@@ -53,18 +53,17 @@
 		]
 	},
 	"Y": {
-		"typeName": "Beta Java 25",
+		"typeName": "Beta Java 26",
 		"streams": {
 			"4.38": {
 				"branch": "master",
-				"disabled": "true",
 				"schedule": "0 10 * 8-10 2,4,6\n0 10 1-26 11 2,4,6"
 			}
 		},
 		"branches": {
-			"eclipse.jdt.core": "BETA_JAVA25",
-			"eclipse.jdt.debug": "BETA_JAVA25",
-			"eclipse.jdt.ui": "BETA_JAVA25"
+			"eclipse.jdt.core": "BETA_JAVA26",
+			"eclipse.jdt.debug": "BETA_JAVA26",
+			"eclipse.jdt.ui": "BETA_JAVA26"
 		},
 		"mailingList": "[email protected]",
 		"testJobFolder": "YBuilds",
@@ -81,33 +80,25 @@
 				"os": "linux",
 				"ws": "gtk",
 				"arch": "x86_64",
-				"javaVersion": 25,
+				"javaVersion": 26,
 				"agentLabel": "ubuntu-2404",
-				"javaHome": "install('jdk', 'https://download.java.net/java/GA/jdk25/bd75d5f9689641da8e1daabeccb5528b/36/GPL/openjdk-25_linux-x64_bin.tar.gz')"
+				"javaHome": "tool(type:'jdk', name:'openjdk-jdk26-latest')"
 			},
 			{
 				"os": "macosx",
 				"ws": "cocoa",
 				"arch": "aarch64",
-				"javaVersion": 21,
+				"javaVersion": 26,
 				"agentLabel": "nc1ht-macos11-arm64",
-				"javaHome": "'/Library/Java/JavaVirtualMachines/jdk-21.0.5+11-arm64/Contents/Home'"
-			},
-			{
-				"os": "macosx",
-				"ws": "cocoa",
-				"arch": "x86_64",
-				"javaVersion": 21,
-				"agentLabel": "nc1ht-macos11-arm64",
-				"javaHome": "'/Library/Java/JavaVirtualMachines/jdk-21.0.5+11/Contents/Home'"
+				"javaHome": "install('jdk', 'https://download.java.net/java/early_access/jdk26/18/GPL/openjdk-26-ea+18_macos-aarch64_bin.tar.gz')"
 			},
 			{
 				"os": "win32",
 				"ws": "win32",
 				"arch": "x86_64",
-				"javaVersion": 21,
+				"javaVersion": 26,
 				"agentLabel": "qa6xd-win11",
-				"javaHome": "'C:\\\\Program Files\\\\Eclipse Adoptium\\\\jdk-21.0.5.11-hotspot'"
+				"javaHome": "install('jdk', 'https://download.java.net/java/early_access/jdk26/18/GPL/openjdk-26-ea+18_windows-x64_bin.zip')"
 			}
 		]
 	}