這段時間主要進行一些基礎知識的學習，放到這里做一個備忘。

public static void main(String[] args){String a = "a1";String b = "a"+ 1;System.out.println(a==b); }//true public static void main(String[] args){String a = "ab";String bb = "b";String b = "a"+ bb;System.out.println(a==b)； }//false public static void main(String[] args){String a = "ab";final String bb = "b";String b = "a"+ bb;System.out.println(a==b); }//true public static void main(String[] args){String a = "ab";final String bb = getBB();String b = "a"+ bb;System.out.println(a==b); } private static String getBB(){ return "b"; }//falseprivate static String a = "ab"; public static void main(String[] args){String s1 = "a";String s2 = "b";String s = s1 + s2;System.out.println(s == a);//falseSystem.out.println(s.intern() == a);//true }private static String a = new String("ab"); public static void main(String[] args){String s1 = "a";String s2 = "b";String s = s1 + s2;System.out.println(s == a);//falseSystem.out.println(s.intern() == a);//falseSystem.out.println(s.intern() == a.intern());//false }

關于上面問題的解釋，請參照

http://home.open-open.com/space-4097-do-blog-id-1336.html

轉載于:https://www.cnblogs.com/snail-tomorrow/archive/2012/06/27/2565746.html

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