Java中数组之间的比较

// null 元素是相等的. Z(R28n\q  
  boolean[] bArr1 = null; a@ n eU~  
  boolean[] bArr2 = null; Rr!VD(V  
  boolean b = Arrays.equals(bArr1, bArr2);             // true oEmSZd)`LF  
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  // 比较两个boolean数组. L+ ,  
  bArr1 = new boolean[]{true, false}; qi.=VM s  
  bArr2 = new boolean[]{true, false}; c>c,V?  
  b = Arrays.equals(bArr1, null);                   // false i#O.{q=x  
  b = Arrays.equals(bArr1, bArr2);                   // true ,k'nN^gmf  
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  // 对于原生类型的数组可以用equals(). qvE;N-3N  
  b = Arrays.equals(new byte[]{0}, new byte[]{0});       // true */^8WK%3d  
  b = Arrays.equals(new char[]{'a'}, new char[]{'a'});     // true <b>X;WI5hd  
  b = Arrays.equals(new short[]{0}, new short[]{0});       // true $.p ]U w  
  b = Arrays.equals(new int[]{0}, new int[]{0});         // true A\[De9*  
  b = Arrays.equals(new long[]{0L}, new long[]{0L});       // true 0~CK^_.&!|  
  b = Arrays.equals(new float[]{0F}, new float[]{0F});     // true mR2N:Nx 9  
  b = Arrays.equals(new double[]{0D}, new double[]{0D});   // true D]%2XMb  
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  // 如果比较的是Object型的数组，null元素是相等的. rOZ }X5  
  // 如果于元素不是null, Java虚拟机会自动调用Object.equals(). ]{oOHj  
  b = Arrays.equals(new String[]{"a"}, new String[]{"a"});   // true ~UK&}%jQ  
  b = Arrays.equals(new String[]{null}, new String[]{null}); // true n?um9QP  
  b = Arrays.equals(new String[]{"a"}, new String[]{null}); // false