? while printing heart symbol

问题

Sorry for asking a stupid question, We are trying to print heart symbol from database to Java XML file. But the same is getting printed as "?" not sure where am I missing. Have tried the char unicode. As a practice I tried it using in main method. Please find the sample java class.

public static void main(String[] args) {

    String t = "\u2665";
    String myUnicodeSymbol = "\u05D0";
    char hollowHeart = '\u2661';
    String hollowDiamond = "\u2662";
    String spade = "\u2660";
    String club = "\u2663";

    StringBuffer buffer = new StringBuffer("<HEAD>");
    buffer.append("<HEART>").append(hollowHeart).append("</HEART>");
    buffer.append("</HEAD>");
    System.out.println(t);
    System.out.println(buffer.toString());
}

The ouput is:- ? ?

Not sure what am I missing.

回答1:

I think it depends on settings of the console where the output lands.

I have compiled and run your code in Eclipse and have seen heart symbol. But if I run the program from standard windows console then I see "?" instead of heart symbol too.

However you need to change standard settings in Eclipse.

Window -> Preferences -> General -> Workspace -> set "Text file encoding" to "Other: UTF-8"

回答2:

System.out.println does not support I think the Unicode characters in MAC.

Reference From MACWORLD

Try this

PrintStream out = new PrintStream(System.out, true, "UTF-8");

out.println(t);

You also will need to throw UnsupportedEncodingException or handle it.

来源：https://stackoverflow.com/questions/9100125/while-printing-heart-symbol

标签

java

printing

symbols