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+package com.sf.day02;
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+
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+
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+import javax.swing.text.MaskFormatter;
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+import java.util.Scanner;
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+
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+public class Test {
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+ static int age = 18;
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+
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+
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+
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+
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+ /*
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+ 获取用户的方法
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+ 方法名：getInfo
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+ 参数名称：args
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+ 形参 实参
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+
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+ 参数类型：String[]
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+ */
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+ public void getInfo(String[] args){
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+ System.out.println(args);
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+// System.out.println(age);
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+ }
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+
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+ /**
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+ * 静态方法 用 静态变量
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+ * 非静态方法中 可以使用静态变量
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+ * @param args
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+ */
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+ public static void main(String[] args) {
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+
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+
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+ /**
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+ * 随机数
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+ *
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+ */
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+// double random = Math.random();
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+// System.out.println(random);
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+// for (int i = 0;i<10;i++){
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+// double random = Math.random();
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+// System.out.println(random);
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+// }
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+
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+ /**
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+ * [5 - 9]
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+ */
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+ for (int i = 0;i<100;i++){
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+// double v = (Math.random() * 5) + 5;
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+// System.out.println(v);
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+ // [103--118] int
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+ int v = (int) ((Math.random() * 16) + 103);
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+ System.out.println(v);
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+ }
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+
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+ /**
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+ * [1,6] int double（1，6）
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+ */
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+ for (int i = 0;i<100;i++){
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+ // [1,6] int 6.999909 -- int
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+ int v = (int) ((Math.random() * 6) + 1);
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+ System.out.println(v);
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+ //double（1，6） 6.9999---5.9999
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+ double v1 = ((Math.random() * 5) + 1);
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+ System.out.println(v1);
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+ }
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+
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+
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+
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+// eat("饺子");
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+// eat("包子");
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+// System.out.println(age);
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+// /**
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+// * 变量
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+// * 格式： 数据类型 变量名 = 变量值
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+// */
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+//
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+// int userId = 1001;
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+// int userId1;
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+// userId1 = 1002;
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+// //如果说 我定义两个变量 a = 10 b = 11
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+// int a , b ;
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+// a = 10;
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+// b = 11;
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+// int a1 =10,b1 =11;
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+// int c = 0;
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+//// System.out.println(a1);
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+// System.out.println(c);
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+
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+ /**
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+ * 整型
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+ * byte short int long
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+ */
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+
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+// byte a = 1;
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+// short b = 2;
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+// int c = 3;
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+// long d = 4L;
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+//
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+//// float e = 5.0F;
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+// float e = (float)5.0;
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+//
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+//// double sum = 1 + 1.0;
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+// double v = 1 + 1.0;
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+// /**
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+// * java中用来表示字符串的类型是String
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+// */
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+// String str = "abcd";
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+// System.out.println(str);
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+// double f = 5.0;
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+//
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+// char ch = 'A';
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+// char c1 = '\n';
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+//// System.out.println("a");
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+//// System.out.print("a");
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+// //A = 65 a = 97
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+//
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+// System.out.println((int) ch);
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+//
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+// char a1 = 'a';
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+// System.out.println((int) a1+ch);
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+// System.out.println((char) 107);
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+//
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+// boolean flag = true; //真
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+// boolean flag1 = false; //假
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+
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+ /**
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+ * 在没有接收值的情况下 a++ 和 ++a 等同效果 都是对a进行+1操作
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+ */
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+// int a = 1;
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+// int b = 2;
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+//// a++;
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+// ++a;
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+// System.out.println(a);
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+
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+ /**
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+ * 在有接收值的情况下
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+ * int c = a++;
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+ * 先赋值在运算 a-->b 再对a的本身进行+1操作
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+ *
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+ * int b = ++a;
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+ * 先运算后赋值 先对a的本身进行+1操作 再赋值给接受的变量值
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+ */
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+// int a =1;
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+//// int b = a++;
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+// int b = ++a;
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+// System.out.println(a);
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+// System.out.println(b);
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+
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+ short s = 3;
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+ s= (short) (s+2); //1 可能存在数据精度丢失问题
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+ s += 2; //2 推荐
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+
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+ long d = 2;
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+ d = d+2;
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+ d += 2;
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+
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+ /**
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+ * | 运算符 | 介绍 | 范例 | 结果 |
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+ * | :--------- | :----------------- | :------------------------ | :---- |
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+ * | != | 不等于 | 4!=3 | true |
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+ * | == | 判断两个数是否相等 | 4==3 | false |
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+ * | < | 小于 | 4<3 | false |
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+ * | > | 大于 | 4>3 | true |
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+ * | <= | 小于等于 | 4<=3 | false |
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+ * | >= | 大于等于 | 4>=3 | true |
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+ * | instanceof | 检查是否是类的对象 | “Hello” instanceof String | true |
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+ */
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+// if(4 != 3){
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+// System.out.println(true);
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+// System.out.println(true);
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+// }
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+// else {
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+// System.out.println(false);
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+// System.out.println(false);
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+// }
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+//
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+// boolean a = true;
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+// boolean b = false;
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+// if(a&&b){
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+// System.out.println("zhen");
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+// }
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+//
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+// boolean c = false;
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+// if(c&&a){
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+// System.out.println("zhen");
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+// }
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+//
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+// /**
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+// * 5< x >10(x大于5并且小于10) 3
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+// */
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+//
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+// int x = 0;
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+// if(x >5 && x<10){
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+//
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+// }
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+//// int i = 5 >> 2;
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+//// System.out.println("5<<2 ===="+ i);
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+// int num = 2;
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+// System.out.println(num<<2);
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+// System.out.println(num);
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+//
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+// /**
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+// * 格式: (条件表达式)?表达式1:表达式2
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+// */
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+// int aa = 9;
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+// int bb = 8;
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+// int max = (aa>bb)?aa:bb;
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+// System.out.println(max);
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+//
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+//
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+// /**
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+// * 获取三个数中的最大值
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+// */
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+// int cc =1;
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+// int dd =2;
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+// int ee =3;
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+// cc = (cc>dd)?cc:dd;
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+// cc = (cc > ee)?cc:ee;
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+// System.out.println(cc);
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+
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+
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+ /**
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+ * 从键盘输入 1 1.0 "hello" true
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+ */
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+// Scanner scanner = new Scanner(System.in);
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+// //输入一个整型 1
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+// int nextInt = scanner.nextInt();
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+// System.out.println(nextInt);
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+// //nextDouble
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+// double nextDouble = scanner.nextDouble();
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+// System.out.println(nextDouble);
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+// //String
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+// String next = scanner.next();
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+// System.out.println(next);
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+// //boolean
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+// boolean bool = scanner.nextBoolean();
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+// System.out.println(bool);
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+
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+
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+ /**
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+ * **案例：**小明注册某交友网站，要求录入个人相关信息。如下：
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+ *
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+ * 请输入你的网名（String）、你的年龄（int）、你的体重（double）、你是否单身（an）、你的性别（int）等情况
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+ */
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+// Scanner scanner = new Scanner(System.in);
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+// System.out.println("请输入你的网名");
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+// String name = scanner.next();
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+// System.out.println(name);
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+// System.out.println("你的年龄（int）");
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+// int age = scanner.nextInt();
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+// System.out.println(age);
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+// System.out.println("你的体重（double）");
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+// double nextDouble = scanner.nextDouble();
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+// System.out.println(nextDouble);
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+// System.out.println("你是否单身");
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+// String single = scanner.next();
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+// System.out.println(single);
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+// System.out.println("你的性别（int）");
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+// int sex = scanner.nextInt();
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+// System.out.println(sex);
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+// System.out.println("输入完成");
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+
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+ /**
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+ * System.out.println(“是否中分: (1/0));
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+ * scanner.nextInt();
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+ *
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+ * System.out.println(“篮球: (true/false));
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+ * scanner.nextBoolean();
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+ *
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+ * System.out.println(“背带裤: (是/否));
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+ * scanner.next(); //"是".equals(str)
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+ */
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+ Scanner scanner = new Scanner(System.in);
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+ System.out.println("是否中分: (1/0)");
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+ int nextInt = scanner.nextInt();
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+ System.out.println("篮球: (true/false)");
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+ boolean aBoolean = scanner.nextBoolean();
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+ System.out.println("背带裤: (是/否)");
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+ String next = scanner.next();
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+ if(nextInt == 1 && aBoolean == true && next.equals("是")){
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+ System.out.println("真爱粉");
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+ }else if(nextInt == 1 || aBoolean == true || next.equals("是")){
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+ System.out.println("假ikun");
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+ }else {
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+ System.out.println("小黑子");
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+ }
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+
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+
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+
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+ }
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+
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+
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+ public static void eat(String str){
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+ System.out.println(str);
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+ }
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+
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+
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+
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+
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+
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+}
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