/bin/java

sudo update-alternatives --config java

rpm -qa | grep ^java
java-1.8.0-openjdk-headless-1.8.0.382.b05-1.el7_9.x86_64
java-11-openjdk-11.0.20.0.8-1.el7_9.x86_64
java-11-openjdk-headless-11.0.20.0.8-1.el7_9.x86_64
javapackages-tools-3.4.1-11.el7.noarch
java-1.8.0-openjdk-1.8.0.382.b05-1.el7_9.x86_64
java-11-openjdk-devel-11.0.20.0.8-1.el7_9.x86_64

Java, JVM, JDK, JRE, OpenJDK, Tomcat, Java Management Extensions (JMX), Apache Maven, Gradle, Micronaut, RMI, JNDI, Log4j, Spring framework, Java version history, .jar, .war, .ear, Java annotations, Java code coverage tools, JMS, Java 8, Java 10, Java 11, Java 20, /bin/java, Invalid Java version, java.util, .jsf, java --version, JASYPT (Java Simplified Encryption), JAVA_TOOL_OPTIONS