@Test public void test(){ ArrayList<String> bookslist = new ArrayList<>(); bookslist.add("超級記憶"); bookslist.add("頭腦風暴"); bookslist.add("超級記憶2"); bookslist.add("頭腦風暴2"); bookslist.add("超級記憶3"); bookslist.add("頭腦風暴3"); /* 增強普通for循環 for ( String te: bookslist) { System.out.println(te); } */ bookslist.forEach(System.out::println); System.out.println("-----------------------"); bookslist.stream().filter(a->a.contains("頭")).forEach(System.out::println); } |
輸出結果:
com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.example.Testjdk18,test Process finished with exit code 0 |