I am developing a mini project using springBootMVC I18n internationalization concept. when i convert Hindi or Chinese language in browser ???? are come. But in other languages like France, German and etc.. are working correctly

enter image description here

Give me the solution why some specific languages are not converting where those languages are providing unicode.

#labels for the gome page
home.title=I18n u092Eu0947u0902 u0906u092Au0915u093E u0938u094Du0935u093Eu0917u0924 u0939u0948
home.link=u0917u094Du0930u093Eu0939u0915 u092Au0902u091Cu0940u0915u0943u0924 u0915u0930u0947u0902

customer.register.title=u0917u094Du0930u093Eu0939u0915 u092Au0902u091Cu0940u0915u0930u0923 u092Au0943u0937u094Du0920
customer.register.name=u0917u094Du0930u093Eu0939u0915 u0915u093E u0928u093Eu092E
customer.register.address=u0917u094Du0930u093Eu0939u0915 u0915u093E u092Au0924u093E
customer.register.billAmt=u0917u094Du0930u093Eu0939u0915 billAmt
customer.button.caption=u0917u094Du0930u093Eu0939u0915 u092Au0902u091Cu0940u0915u0943u0924 u0915u0930u0947u0902

<h1 style="color:red;text-align:center"><sp:message code="home.title"/></h1>
    
    <br><br>
    <h3 style="text-align:center"><a href="register"><sp:message code="home.link"/></a></h3>
    
    <br><br>
    <p style="text-align:center">
    <a href="?lang=en_US">English</a>  
    <a href="?lang=fr_FR">French</a>  
    <a href="?lang=hi_IN">Hindi</a>  
    <a href="?lang=zh_CN">Chinese</a>  
    <a href="?lang=de_DE">German</a>
    </p>