Drop support for 0.x version.

DataDog · AlexeyKuznetsov-DD · May 28, 2025 · May 20, 2025 · May 20, 2025 · May 23, 2025
commit 5fa1bb6beca605e70c7c23978bc3d3714ab4d1fb
@@ -29,11 +29,7 @@ public static void agentmain(final String agentArgs, final Instrumentation inst)
   }
 
   private static void reportIncompatibleJava(
-      String javaVersion,
-      int majorJavaVersion,
-      String javaHome,
-      String agentVersion,
-      PrintStream output) {
+      String javaVersion, String javaHome, String agentVersion, PrintStream output) {
     output.println(
         "Warning: "
             + (agentVersion == null ? "This version" : "Version " + agentVersion)
@@ -42,13 +38,7 @@ private static void reportIncompatibleJava(
             + " found at '"
             + javaHome
             + "' and will not be installed.");
-
-    String msg = "Please upgrade your Java version to 8+";
-    if (majorJavaVersion == 7) {
-      msg +=
-          " or use the 0.x version of dd-java-agent in your build tool or download it from https://dtdg.co/java-tracer-v0";
-    }
-    output.println(msg);
+    output.println("Please upgrade your Java version to 8+");
   }
 
   static void sendTelemetry(String forwarderPath, String javaVersion, String agentVersion) {
@@ -103,7 +93,7 @@ static boolean compatible(String javaVersion, String javaHome, PrintStream outpu
 
     String agentVersion = getAgentVersion();
 
-    reportIncompatibleJava(javaVersion, majorJavaVersion, javaHome, agentVersion, output);
+    reportIncompatibleJava(javaVersion, javaHome, agentVersion, output);
 
     String forwarderPath = System.getenv("DD_TELEMETRY_FORWARDER_PATH");
     if (forwarderPath != null) {

@@ -74,7 +74,7 @@ class AgentPreCheckTest extends Specification {
       logLines.size() == 2
       def expectedLogLines = [
         "Warning: Version ${AgentJar.getAgentVersion()} of dd-java-agent is not compatible with Java $javaVersion found at '/Library/$javaVersion' and will not be installed.",
-        "Please upgrade your Java version to 8+" + (AgentPreCheck.parseJavaMajorVersion(javaVersion) == 7 ? " or use the 0.x version of dd-java-agent in your build tool or download it from https://dtdg.co/java-tracer-v0" : "")
+        "Please upgrade your Java version to 8+"
       ]
       assert logLines == expectedLogLines
     }
@@ -152,7 +152,7 @@ class AgentPreCheckTest extends Specification {
       def minor = (int) it.readShort()
       def major = (int) it.readShort()
 
-      assert magic == 0xCAFEBABE
+      assert magic == 0xCAFEBABEL
       assert minor == 0
       assert major == expectedMajor
     } == null

@@ -15,7 +15,7 @@
 public class StartWithAgentTest {
 
   private static final Pattern WARNING_PATTERN = Pattern.compile("^Warning: Version [^ ]+ of dd-java-agent is not compatible with Java [^ ]+ and will not be installed\\.$");
-  private static final String UPGRADE_MESSAGE = "Please upgrade your Java version to 8+ or use the 0.x version of dd-java-agent in your build tool or download it from https://dtdg.co/java-tracer-v0";
+  private static final String UPGRADE_MESSAGE = "Please upgrade your Java version to 8+";
 
   @Test
   void ensureThatApplicationStartsWithAgentOnJava7() throws InterruptedException, IOException {