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[Backport 3.0] Update JavaVersionChecker to enforce min of JDK21 #18038

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[Backport 3.0] Update JavaVersionChecker to enforce min of JDK21 #18038

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8 changes: 4 additions & 4 deletions ...n-checker/src/main/java/org/opensearch/tools/java_version_checker/JavaVersionChecker.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,14 +37,14 @@
import java.util.Locale;

/**
* Simple program that checks if the runtime Java version is at least 11
* Simple program that checks if the runtime Java version is at least 21
*/
final class JavaVersionChecker {

private JavaVersionChecker() {}

/**
* The main entry point. The exit code is 0 if the Java version is at least 11, otherwise the exit code is 1.
* The main entry point. The exit code is 0 if the Java version is at least 21, otherwise the exit code is 1.
*
* @param args the args to the program which are rejected if not empty
*/
Expand All @@ -53,10 +53,10 @@ public static void main(final String[] args) {
if (args.length != 0) {
throw new IllegalArgumentException("expected zero arguments but was " + Arrays.toString(args));
}
if (Runtime.version().compareTo(Version.parse("11")) < 0) {
if (Runtime.version().compareTo(Version.parse("21")) < 0) {
final String message = String.format(
Locale.ROOT,
"OpenSearch requires Java 11; your Java version from [%s] does not meet this requirement",
"OpenSearch requires Java 21; your Java version from [%s] does not meet this requirement",
System.getProperty("java.home")
);
errPrintln(message);
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