CentOS7 JDK 설치 및 테스트

1. 설치 가능한 jdk 목록 확인

# yum list java*jdk-devel
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Installed Packages
java-1.8.0-openjdk-devel.x86_64             1:1.8.0.232.b09-0.el7_7                @updates
Available Packages
java-1.6.0-openjdk-devel.x86_64             1:1.6.0.41-1.13.13.1.el7_3             base
java-1.7.0-openjdk-devel.x86_64             1:1.7.0.241-2.6.20.0.el7_7             updates
java-1.8.0-openjdk-devel.i686               1:1.8.0.232.b09-0.el7_7                updates
java-11-openjdk-devel.i686                  1:11.0.5.10-0.el7_7                    updates
java-11-openjdk-devel.x86_64                1:11.0.5.10-0.el7_7                    updates

2. 1.8 버전을 설치하자. (본인은 이미 1.8이 설치되어 있다.)

# yum install java-1.8.0-openjdk-devel.x86_64

3. 설치 확인(아래와 같이 뜨면 성공!)

# rpm -qa java*jdk-devel
java-1.8.0-openjdk-devel-1.8.0.232.b09-0.el7_7.x86_64

# javac -version
javac 1.8.0_232

4. 컴파일 되나 테스트!

# echo "public class HelloWorld {" > HelloWorld.java
# echo "  public static void main(String[] args) {" >> HelloWorld.java
# echo "    System.out.println(\"Hello, World\");" >> HelloWorld.java
# echo "  }" >> HelloWorld.java
# echo "}" >> HelloWorld.java
# ls
HelloWorld.java  README.md  check.txt  test.py
# javac HellooWorld.java
# java HelloWorld
Hello, World

수고하셨씁니다!!