Unicode characters in Java identifiers

gistfile1.java

 public class App {

    static String x8mil200µm;  // micro symbol
    static String x7mil175μm;  // mu letter
    static int aβc = 10;
    static final double π = 3.14159265359;

    public static void main(String[] args) {
        x8mil200µm = "Y";
        x7mil175μm = "N";
        a\u03b2c = 20;

        System.out.println(x8mil200µm);
        System.out.println(x7mil175μm);
        System.out.println(π);
        System.out.println(aβc);
    }
}