diff --git a/.gitignore b/.gitignore
index 4ac68d8..6bb9924 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,7 +11,7 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 downloads
-go
+java
 versions
 # Dependency directories (remove the comment below to include it)
 # vendor/
diff --git a/cli/cli.go b/cli/cli.go
index 723f71d..e528710 100644
--- a/cli/cli.go
+++ b/cli/cli.go
@@ -64,8 +64,8 @@ func init() {
 // Run 运行g命令行
 func Run() {
 	app := cli.NewApp()
-	app.Name = "g"
-	app.Usage = "Golang Version Manager"
+	app.Name = "j"
+	app.Usage = "JAVA Version Manager"
 	app.Version = build.Version()
 	app.Copyright = fmt.Sprintf("Copyright (c) 2019-%d, voidint. All rights reserved.", time.Now().Year())
 	app.Authors = []*cli.Author{
@@ -74,7 +74,7 @@ func Run() {
 
 	app.Before = func(ctx *cli.Context) (err error) {
 		ghomeDir = ghome()
-		goroot = filepath.Join(ghomeDir, "go")
+		goroot = filepath.Join(ghomeDir, "java")
 		downloadsDir = filepath.Join(ghomeDir, "downloads")
 		if err = os.MkdirAll(downloadsDir, 0755); err != nil {
 			return err
diff --git a/cli/commands.go b/cli/commands.go
index 6c6227a..b539fce 100644
--- a/cli/commands.go
+++ b/cli/commands.go
@@ -7,13 +7,13 @@ var (
 		{
 			Name:      "ls",
 			Usage:     "List installed versions",
-			UsageText: "g ls",
+			UsageText: "j ls",
 			Action:    list,
 		},
 		{
 			Name:      "use",
 			Usage:     "Switch to specified version",
-			UsageText: "g use <version>",
+			UsageText: "j use <version>",
 			Action:    use,
 		},
 	}