/**
* Locates a JDK installation for the given version.
*
* @return null if not found.
*/
@Nullable
public static JavaInfo getJdk(JavaVersion version) {
for (JvmInstallation candidate : getJvms()) {
if (candidate.getJavaVersion().equals(version) && candidate.isJdk()) {
return Jvm.forHome(candidate.getJavaHome());
}
}
return null;
}
/**
* Locates a JVM installation that has a different version to the current JVM, ie for which
* java.version is different.
*
* @return null if not found.
*/
@Nullable
public static JavaInfo getDifferentVersion() {
Jvm jvm = Jvm.current();
for (JvmInstallation candidate : getJvms()) {
if (candidate.getJavaVersion().equals(jvm.getJavaVersion())) {
continue;
}
return Jvm.forHome(candidate.getJavaHome());
}
return null;
}
/**
* Locates a JDK installation that is different to the current JVM, ie for which java.home is
* different.
*
* @return null if not found.
*/
@Nullable
public static JavaInfo getDifferentJdk() {
Jvm jvm = Jvm.current();
for (JvmInstallation candidate : getJvms()) {
if (candidate.getJavaHome().equals(jvm.getJavaHome())) {
continue;
}
// Currently tests implicitly assume a JDK
if (!candidate.isJdk()) {
continue;
}
return Jvm.forHome(candidate.getJavaHome());
}
return null;
}
public File getEffectiveJavaExecutable() {
if (javaHome == null) {
return Jvm.current().getJavaExecutable();
}
return Jvm.forHome(javaHome).getJavaExecutable();
}