From 541f2389eb9dc73311299879c1d8a4f47e820b2c Mon Sep 17 00:00:00 2001 From: 1 1 <2161737470@qq.com> Date: Fri, 25 Nov 2022 23:29:18 +0800 Subject: [PATCH 1/2] =?UTF-8?q?=E6=9D=8E=E6=98=8E=E5=81=A5=E7=9A=84?= =?UTF-8?q?=E7=AC=AC=E4=B8=80=E6=AC=A1=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../20221125java\345\217\230\351\207\217.md" | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 "04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" diff --git "a/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" "b/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" new file mode 100644 index 0000000..b4688c5 --- /dev/null +++ "b/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" @@ -0,0 +1,42 @@ +# java + +## 变量 + +1.字符 + +```java +char sex ='男'; +``` + + + +2.整数 + +```java +byte short int[默认] long +``` + + + +3.小数 + +```java +float double[默认] +``` + + + +4.字符串 + +```java +String +``` + + + +5.布尔 + +```java +boolean +``` + -- Gitee From a54441792959dfd4bd204e72e6c7568159734254 Mon Sep 17 00:00:00 2001 From: 1 1 <2161737470@qq.com> Date: Sat, 26 Nov 2022 12:09:02 +0800 Subject: [PATCH 2/2] =?UTF-8?q?=E6=9D=8E=E6=98=8E=E5=81=A5=E7=9A=84?= =?UTF-8?q?=E7=AC=AC=E4=B8=80=E6=AC=A1=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../20221125java\345\217\230\351\207\217.md" | 42 ----------- .../20221126java\345\217\230\351\207\217.md" | 70 +++++++++++++++++++ 2 files changed, 70 insertions(+), 42 deletions(-) delete mode 100644 "04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" create mode 100644 "04 \346\235\216\346\230\216\345\201\245/20221126java\345\217\230\351\207\217.md" diff --git "a/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" "b/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" deleted file mode 100644 index b4688c5..0000000 --- "a/04 \346\235\216\346\230\216\345\201\245/20221125java\345\217\230\351\207\217.md" +++ /dev/null @@ -1,42 +0,0 @@ -# java - -## 变量 - -1.字符 - -```java -char sex ='男'; -``` - - - -2.整数 - -```java -byte short int[默认] long -``` - - - -3.小数 - -```java -float double[默认] -``` - - - -4.字符串 - -```java -String -``` - - - -5.布尔 - -```java -boolean -``` - diff --git "a/04 \346\235\216\346\230\216\345\201\245/20221126java\345\217\230\351\207\217.md" "b/04 \346\235\216\346\230\216\345\201\245/20221126java\345\217\230\351\207\217.md" new file mode 100644 index 0000000..1298981 --- /dev/null +++ "b/04 \346\235\216\346\230\216\345\201\245/20221126java\345\217\230\351\207\217.md" @@ -0,0 +1,70 @@ +# java + +## 数字类型 + +1.字符 + +```java +char sex ='男'; +``` + + + +2.整数 + +```java +byte short int[默认] long +``` + + + +3.小数 + +```java +float double[默认] +``` + + + +4.字符串 + +```java +String +``` + + + +5.布尔 + +```java +boolean +``` + +## 变量 + +1.格式：数字类型 变量名 = 变量值； 例：int price = 998 + +2.注意事项：（1）变量名不能重复 （2）变量未赋值，不能使用 + +​ （3）定义long类型变量，数据后面加L 以此类推 + +## 关键字 + +1.什么是关键字被: Java语言赋予了特定含义的单词 + +2.特点：全部小写 常用的代码编辑器，有特殊的颜色标记 + +## 作业 + +```java +public class work { + public static void main(String[] args) { + System.out.println("我爱2班"); + System.out.println("我爱念哥"); + String tell=("念哥真帅，"); + String tell1=("年年十八"); + System.out.println(tell+"念念十八"+tell1); + } +} +``` + -- Gitee