Question

如果像这样创建，则工作正常：

byte [] d = {1,2};
String ss = new String( d );

但如果像这样创作就失败了：

String ss = new String( {1,2} );

甚至是这样：

String ss = new String( {(byte)1,(byte)2});

有什么问题？

Answer 1

String ss = new String( new byte[]{1,2} );

String ss = new String( {1,2} );不起作用，因为只需执行{}块就无法初始化数组。它需要前面的new someThing[]。

Answer 2

String ss = new String (array of bytes);
 we can pass here array of bytes but in
String ss = new String( {1,2} ); {1 , 2} this is not an array and 
String ss = new String( {(byte)1,(byte)2}); {(byte)1,(byte)2} this is also not an array 

So we can simply use 
String ss = new String( new byte[]{1,2} );

从byte []创建字符串

2 个答案: