unsupported-class-version

问题 I am trying to use Notepad++ as my all-in-one tool edit, run, compile, etc. I have JRE installed, and I have setup my path variable to the .../bin directory. When I run my "Hello world" in Notepad++, I get this message: java.lang.UnsupportedClassVersionError: test_hello_world : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(Unknown Source) ......................................... I think the problem here is

问题 I am trying to use Notepad++ as my all-in-one tool edit, run, compile, etc. I have JRE installed, and I have setup my path variable to the .../bin directory. When I run my "Hello world" in Notepad++, I get this message: java.lang.UnsupportedClassVersionError: test_hello_world : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(Unknown Source) ......................................... I think the problem here is

问题 I'm trying to run a simple client-server program written in Java through Ubuntu terminal. I could compile the code successfully unfortunately, I can't run the code. Server class code: import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; public class Server { public static void main(String[] args) { try { //create server Socket with demo port ServerSocket server = new ServerSocket(20); //wait for server connection Socket s = server.accept(); //upon establishing

问题 I'm trying to run a simple client-server program written in Java through Ubuntu terminal. I could compile the code successfully unfortunately, I can't run the code. Server class code: import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; public class Server { public static void main(String[] args) { try { //create server Socket with demo port ServerSocket server = new ServerSocket(20); //wait for server connection Socket s = server.accept(); //upon establishing

问题 I'm trying to run a simple client-server program written in Java through Ubuntu terminal. I could compile the code successfully unfortunately, I can't run the code. Server class code: import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; public class Server { public static void main(String[] args) { try { //create server Socket with demo port ServerSocket server = new ServerSocket(20); //wait for server connection Socket s = server.accept(); //upon establishing

问题 I've read all of the posts about this that I could find, but I can't seem to get past this error to get my maven spring mvc web application working. I just get an HTTP status 500 when i visit localhost or any of the URIs specified in my controllers. From my understanding, the problem occurs because of a higher JDK used at compile time than used at runtime. But it seems to me like all of the references to a JDK or JRE are the same in my case. (1.8) According to this stack overflow post it

问题 It all happens when I was trying to build a springboot application by ./mvnw clean install When I first run the install command, it runs into following problem. [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.749s [INFO] Finished at: Fri Jun 21 02:14:32 IST 2013 [INFO] Final Memory: 4M/15M [INFO] ---------------------------------------------

问题 It all happens when I was trying to build a springboot application by ./mvnw clean install When I first run the install command, it runs into following problem. [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 2.749s [INFO] Finished at: Fri Jun 21 02:14:32 IST 2013 [INFO] Final Memory: 4M/15M [INFO] ---------------------------------------------

问题 I am trying to build by own AOSP from google source. I follwed the steps mentioned in the Google Documents and was successfully able to build it and flash my device with the images successfully. However, I tried building it again after making some changes (basically just added some Logs to play around with it). The build errored out. I then tried to make again, it said Javac 1.6 found. Required Javac 1.7 . I then followed the answers for this particular problem by using the following command:

问题 I have a Maven Eclipse application which I'm trying to run through the command prompt using the following command: java -cp target/classes;"target/dependency/*" com.example.Main Unfortunately, it throws an error: UnsupportedClassVersionError : unsupported major.minor version 51.0 I did some digging and found out it has something to do with the application being compiled on a JDK of a newer version, than the JRE it runs on. Apparently the 51 means it was built for 1.7, but I don't have a JDK 7