GitHub

java.lang.NullPointerException: Cannot invoke "org.eclipse.lsp4j.ServerCapabilities.getCodeActionProvider()" because "this.serverCapabilities" is …

Internal error: java.lang.NullPointerException: Cannot invoke "org.eclipse.lsp4j.ServerCapabilities.getCodeActionProvider()" because "this.serverCapabilities" is null ...
InfoWorld

Effective Java NullPointerException Handling

It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...
GitHub

java.lang.NullPointerException: Cannot invoke "org.apache.shardingsphere.proxy.backend.handler.ProxyBackendHandler.close()" because "this.p…

databaseName: sharding_db dataSources: ds_0: password: url: jdbc:mysql://192.168.10.23:13333/test?serverTimezone=UTC&useSSL=false username: root minPoolSize: 1 ...