p\u0061ck\u0061ge com.sxt.test; import st\u0061ti\u0063 j\u0061v\u0061.l\u0061ng.System.*; pu\u0062li\u0063 \u0063l\u0061ss H\u0065lloWorl\u0064 { st\u0061tic public synchronized void m\u0061in(String\u005b\u005d abcedefg) { 上帝说:out.println("Hello world"); } }