Version: 3.1 Update

src/main/java/hae/utils/ui/UIEnhancer.java

@@ -0,0 +1,30 @@
+package hae.utils.ui;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.FocusEvent;
+import java.awt.event.FocusListener;
+
+public class UIEnhancer {
+    public static void setTextFieldPlaceholder(JTextField textField, String placeholderText) {
+        textField.setForeground(Color.GRAY);
+        textField.setText(placeholderText);
+        textField.addFocusListener(new FocusListener() {
+            @Override
+            public void focusGained(FocusEvent e) {
+                if (textField.getText().equals(placeholderText)) {
+                    textField.setText("");
+                    textField.setForeground(Color.BLACK);
+                }
+            }
+
+            @Override
+            public void focusLost(FocusEvent e) {
+                if (textField.getText().isEmpty()) {
+                    textField.setForeground(Color.GRAY);
+                    textField.setText(placeholderText);
+                }
+            }
+        });
+    }
+}