Dap not working for java

[suvasanket]

LSP client configuration

local jdtls = require("jdtls") local cmp_nvim_lsp = require("cmp_nvim_lsp")

-- Change jdtls_path to wherever you have your Eclipse Java development tools (JDT) Language Server downloaded to. local jdtls_path = vim.fn.stdpath("data") .. "/language-servers/jdt-language-server" local launcher_jar = vim.fn.glob(jdtlspath .. "/plugins/org.eclipse.equinox.launcher*.jar") local workspace_dir = vim.fn.fnamemodify(vim.fn.getcwd(), ":p:h:t")

-- for completions local client_capabilities = vim.lsp.protocol.make_client_capabilities() local capabilities = cmp_nvim_lsp.default_capabilities(client_capabilities)

local function get_config_dir() -- Unlike some other programming languages (e.g. JavaScript) -- lua considers 0 truthy! if vim.fn.has("linux") == 1 then return "config_linux" elseif vim.fn.has("mac") == 1 then return "config_mac" else return "config_win" end end

-- See :help vim.lsp.start_client for an overview of the supported config options. local config = { capabilities = capabilities,

cmd = { vim.fn.expand("~/.local/share/nvim/mason/bin/jdtls") },

settings = {
    java = {
        autobuild = {
            enabled = false,
        },
        eclipse = {
            downloadSources = true,
        },
        configuration = {
            updateBuildConfiguration = "interactive",
            -- runtimes = {
            --     {
            --         name = "JavaSE-20",
            --         path = "~/Library/Java/JavaVirtualMachines/jdk-20.0.2.jdk/Contents/Home",
            --     },
            -- },
        },
        maven = {
            downloadSources = true,
        },
        referencesCodeLens = {
            enabled = true,
        },
        references = {
            includeDecompiledSources = true,
        },
        inlayHints = {
            parameterNames = {
                enabled = "all", -- literals, all, none
            },
        },
        format = {
            enabled = false,
        },
    },
    signatureHelp = { enabled = true },
},

root_dir = vim.fs.dirname(vim.fs.find({ "mvnw", "gradlew", "pom.xml", ".git" }, { upward = true })[1]),

init_options = {
    extendedClientCapabilities = jdtls.extendedClientCapabilities,
    bundles = {
        vim.fn.glob(
            "/Users/suvasanketrout/.local/share/nvim/mason/packages/java-debug-adapter/extension/server/com.microsoft.java.debug.plugin-*.jar",
            1
        ),
    },
},

on_attach = function(client, bufnr)
    require("jdtls.dap").setup_dap_main_class_configs()

    local opts = { silent = true, buffer = bufnr }
    local map = vim.keymap.set
    map("n", "<leader>coi", jdtls.organize_imports, { desc = "Organize imports", buffer = bufnr })
    map("n", "<leader>ctc", jdtls.test_class, { desc = "test class", buffer = bufnr })
    map("n", "<leader>ctm", jdtls.test_nearest_method, { desc = "test method", buffer = bufnr })
    map("n", "<leader>cev", jdtls.extract_variable_all, { desc = "Extract variable", buffer = bufnr })
    map("v", "<leader>cem", [[<ESC><CMD>lua require('jdtls').extract_method(true)<CR>]], { desc = "Extract method", buffer = bufnr })
    map("n", "<leader>cec", jdtls.extract_constant, { desc = "Extract constant", buffer = bufnr })
end,

}

jdtls.start_or_attach(config)

Eclipse.jdt.ls version

No response

Steps to Reproduce

running debug on any java file

Expected Result

run the debug properly

Actual Result

dapui starts and then close within a split second (i think its not a dapui issue)

[mfussenegger]

Can't help you without error messages / logs or reproduction steps. I assure you dap works fine with java if setup correctly.

[suvasanket]

Error: Could not find or load main class filename Caused by: java.lang.ClassNotFoundException: filename

by disabling dapui