https://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.3.2.3

Workaround:

Class SomeClass{
    static {
        Thread t1 = new Thread(new Runnable() {
            @Override    
            public void run() {
                System.out.println(abc); //works

            }
        });

        Thread t2 = new Thread(() -> {
            System.out.println(SomeClass.abc);
            //                 ^-- now works
        });

        t1.start();
        t2.start();
    }

    private static String abc = "test"; //declare after static block

    public static void main(String args[]) {
        System.out.println("main：" + DataAnalyseTest.abc);
    }
}