java: fix autoformatter that comes with jdtls

nvim/ftplugin/java.lua

@@ -13,4 +13,13 @@ vim.lsp.start {
   cmd = { 'jdtls' },
   root_dir = vim.fs.dirname(vim.fs.find(root_files, { upward = true })[1]),
   capabilities = require('user.lsp').make_client_capabilities(),
+  settings = {
+    java = {
+      format = {
+        enabled = true,
+        insertSpaces = true,
+        tabSize = 10,
+      },
+    },
+  },
 }

nvim/init.lua

@@ -31,9 +31,9 @@ opt.spell = true
 opt.spelllang = 'en'
 
 opt.expandtab = true
-opt.tabstop = 2
+opt.tabstop = 4
-opt.softtabstop = 2
+opt.softtabstop = 4
-opt.shiftwidth = 2
+opt.shiftwidth = 4
 opt.foldenable = true
 opt.history = 2000
 opt.nrformats = 'bin,hex' -- 'octal'