Java运算符讲解附例子说明(大全)

- 日理万妓 2023-09-28 16:34 52阅读 0赞

## **前言必读：** ##

> [读者手册（必读）\_云边的快乐猫的博客-CSDN博客][-CSDN]

Java运算符分为六大：算术运算符、赋值运算符、比较运算符、逻辑运算符、条件（三目）运算符、位运算符

**一、算术运算符**：\+(加)，\-(减)，\*(乘)，/(除),%(求余)，\++(自增)，\--(自减)

**二、赋值运算符**：=(等于),\+=(自加一次等于),\-=(自减一次等于),\*=(自乘一次等于),/=(自除一次等于),\+(字符串连接符)

**三、比较运算符**：>(大于),<(小于),>=(大于等于),<=(小于等于),==(比较等于),!=(不等于)

返回结果只有：true或者false

**四、逻辑运算符**：&(按位与),&&(短路与),|(按位或),||(短路或),!(非，即取反)

**五、条件（三目、三元）运算符**：?:

**六、位运算符(都是基于二进制来计算)**：&(按位与)，|(按位或)，^(异或运算)，<<(左移运算符)，>>(右移运算符)，>>>(无符号运算符)，~（非、取反运算符）

位运算符要求了解就好

须知：整数默认为int型

**一、算术运算符：\+(加)，\-(减)，\*(乘)，/(除),%(求余)，\++(自增)，\--(自减)**

1.\+

![b5f1fc6344b043c988861eac90cc140a.png][]

![d9b568b7fb074a02b82355ffaee58af6.png][]

2. \-

![7eed4be38f104835b215440cbab6c6d7.png][]

![aee9e17776c94ec0a05b29f702523f38.png][]

3.\*

![e24f13bb92d74d86a8e1477da39b24d0.png][]

![7574ff6309d647f5bc400362bdf6d875.png][]

4./

注意：整数默认位int型，要精确到小数点后面的数值要进行强制转换

![5e7bce9cf6a045b380f51e65893fd6c5.png][]

![2df54f16fe35493bb4d84d2506aa6646.png][]

5.%

![cc456826ff7549849176829bf848fdb7.png][]

![026e5d643f98478d987eeed8b5e6c24f.png][]

6.**++**

分为两种\++i(先自加再输出)和i++(先输出再自加，常用)，概括解释就是谁在前面就先输出谁

![6dcd7f0992c34cf69407c41aedec1345.png][]

![e6c48d1e19254e6e8d736d09ef252337.png][]

![06f1cdadb9154aea83c9cb18f89f44fc.png][]

![e6c48d1e19254e6e8d736d09ef252337.png][]

7.**--**

也有两种写法，和自增同理

![218021964d75433ab98deceb4b05ec8a.png][]

![7c2c7d1e8e7d48ca8e5328b4a5493dc6.png][]

**=========================================================================**

**二、赋值运算符：=(等于),\+=(自加一次等于),\-=(自减一次等于),\*=(自乘一次等于),/=(自除一次等于),\+(字符串连接符)**

1.=

![abf60fe8d2da4923a74347256380acc7.png][]

![6b710c8890df4cafb138079daad16de0.png][]

2.**+=**

![91bc56aba9b24694b1a1d78b2d46ad5d.png][]

![11791b0fc3e24ee38967a8687097b2f8.png][]

3.**-=**

![c0189c115fe949febf78a5b6def49f70.png][]

![7538c11388944204bba0db87c63564e4.png][]

4.**\*=**

![3da96157ef0246de84d1d85eda3294c1.png][] ![8599fc6c221d48cfb538a35df49b3f43.png][]

5.**/=**

输出默认为int整数型，不会取小数余数这些

![18aeb1ab73d84650b78c6913a882d435.png][]

![28eaf8e9a5234f1da539cfa89f818328.png][]

6.**+**

![c4f3f562c6864419a1b21e50f36bcd32.png][]![a02d69c54f794f8b907eb6843797d05a.png][]

**=========================================================================**

**三、比较运算符：>(大于),<(小于),>=(大于等于),<=(小于等于),==(比较等于),!=(不等于)**

**返回结果只有：true或者false**

1.**>**

![26f94cd261a04a28ab10087059c3ae93.png][]

![0d6e873e171f4a3b8b3935d308268055.png][]

2. **<**

![9577cb13d43f4b6aba4c8ae05365a6f9.png][]

![301f085843ac41628e45e9349aceccf1.png][]

3.**>=**

![5aad106680a74805963d97b88b57565c.png][] ![7e10f4914bd043409a1136d2b25e9bb5.png][]

4.**<=**

![bcd5d880decb4a138be6ce7785597523.png][]![8d9188755116481292b4f2645a74a2ba.png][]

5.**==**

![8ec1c9bb002b46fcb25d4d9d6c3afc74.png][]

![e54c779bcbb14941861566e3365428a9.png][]

6.**!=**

![50c3543166a54e9597659e547d5c3128.png][]

![a915445a3a3141e195318ecfc88e349a.png][]

**=========================================================================**

**四、逻辑运算符：&(按位与),&&(短路与),|(按位或),||(短路或),!(非，即取反)**

1. **&**

2.**&&**

3.**|**

4. **||**

[以上4个在我的另一篇文章中有单独讲到][4]

5. **!**

![e2439cc3f1b2408784da75ab190d225b.png][]

![395fbbfc67b04827bc1f9df99d0bb954.png][]

**========================================================================**

**五、条件（三目、三元）运算符：?:**

![8d322ecac4484b60b285eba0d6fe8cad.png][]

![761bd3ac58da494f8a38c0976e8e502c.png][]

**========================================================================**

**六、位运算符(**都是基于二进制来计算**)：&(按位与)，|(按位或)，^(异或运算)，<<(左移运算符)，>>(右移运算符)，>>>(无符号运算符)，~（非、取反运算符）**

位运算符要求了解就好

1.**&**

![0dce8ae7b2194cf28904052347658f61.png][]

![0df5370a93944626b6c28c3ef159d479.png][]

2.**|**

![f94279a3e825472da0592b93919ece71.png][]

![fb91d92c753f43ba889a2f5114b0dbb0.png][]

3.**^**

![fb5bdd43421e4601abd60921ec6b362d.png][]

![10faecbb544c4831bf6f4cc9f2173537.png][]

4.**<<**

![b79594928ebc4ad7a9f0a94cf2df1432.png][]

![ca85416778154ec9a81dc22fc6a54fd5.png][]

5.**>>**

![6986799eee17423fbf6982070d7c6b43.png][]

![a0e089558cab4eaaa0e295b76d702d45.png][]

6.**>>>**

![7ee52a7a2b3a40dcb3a7fb4017a46c6f.png][]

![438e55b73bae4da09b0a409f8469e071.png][]

7.**~**

![35714414687a44b1bf5bb6564ca1864c.png][]

![5a47c4bd09e647d898f2333d26809b8b.png][]

[-CSDN]: https://blog.csdn.net/m0_52861000/article/details/128148568?spm=1001.2014.3001.5502
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[4]: https://blog.csdn.net/m0_52861000/article/details/125803510?csdn_share_tail=%7B%22type%22%3A%22blog%22%2C%22rType%22%3A%22article%22%2C%22rId%22%3A%22125803510%22%2C%22source%22%3A%22m0_52861000%22%7D
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