52． Java 语言-- 表达式
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- Java 表达式和 C 非常相似, 下面是有效的表达式:
- 2+3
- (2+3)*i
- i++ /* equivalent to i = i +1 */
- (i > 0 ) && (j>0) /* Boolean */
- i <<1 /* Left shift by 1 binary digit */
- (i>0) ? true:false /* Boolean */
- i >>> 2 /* Signed right shift by 2 binary digits */
- "fred" + "jim" is "fredjim"
- /* + Equivalent to . in Perl */
- (a instanceof B) /* True iff object a is of class B */
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