diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..267c321
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# 项目排除路径
+/out/
\ No newline at end of file
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..359bb53
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..31ee1fe
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..fc53374
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/uiDesigner.xml b/.idea/uiDesigner.xml
new file mode 100644
index 0000000..e96534f
--- /dev/null
+++ b/.idea/uiDesigner.xml
@@ -0,0 +1,124 @@
+
+
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+ -
+
+
+
+
+ -
+
+
+ -
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/code.iml b/code.iml
new file mode 100644
index 0000000..e13cb1e
--- /dev/null
+++ b/code.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/java/java.iml b/java/java.iml
new file mode 100644
index 0000000..c90834f
--- /dev/null
+++ b/java/java.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Demo01.java b/java/src/com/susu2568/array/Demo01.java
similarity index 95%
rename from Demo01.java
rename to java/src/com/susu2568/array/Demo01.java
index c007106..1eebb1a 100644
--- a/Demo01.java
+++ b/java/src/com/susu2568/array/Demo01.java
@@ -1,20 +1,20 @@
-package com.susu2568.array;
-
-public class Demo01 {
- public static void main(String[] args) {
-// int[] nums;
-// nums = new int[10];
- int[] nums = new int[10];
- nums[0] = 1;
- nums[1] = 1;
- nums[2] = 1;
- nums[3] = 1;
- int sum = 0;
- for (int i = 0; i -1 ; i--) {
+// System.out.println(array[i]);
+ for (int i = 1; i < args.length-1 ; i++) {
+ System.out.println(array[-i]);
+ }
+ }
+ }
+
diff --git a/java/src/com/susu2568/array/Demo03.java b/java/src/com/susu2568/array/Demo03.java
new file mode 100644
index 0000000..6169fe8
--- /dev/null
+++ b/java/src/com/susu2568/array/Demo03.java
@@ -0,0 +1,29 @@
+package com.susu2568.array;
+import java.util.Arrays;
+public class Demo03 {
+ public static void main(String[] args) {
+ int[] a = {1,2,3,40,900,500,4};
+
+
+ //打印数组元素Arrays.toString(a)
+ System.out.println(Arrays.toString(a));
+
+
+ //数组进行排序 升序
+ Arrays.sort(a);
+ System.out.println(Arrays.toString(a));
+
+ //冒泡排序
+ int temp = 0;
+ for (int i = 0; i < a.length-1; i++) {
+ for (int j = 0; j < a.length-1-i; j++) {
+ if (a[j+1] >a[j]){
+ temp = a[j];
+ a[j]= a[j+1];
+ a[j+1] = temp;
+ }
+ }
+ }
+ System.out.println(Arrays.toString(a));
+ }
+}
diff --git a/java/src/com/susu2568/array/Demo04.java b/java/src/com/susu2568/array/Demo04.java
new file mode 100644
index 0000000..507573e
--- /dev/null
+++ b/java/src/com/susu2568/array/Demo04.java
@@ -0,0 +1,100 @@
+package com.susu2568.array;
+
+import java.sql.SQLOutput;
+
+public class Demo04 {
+ public static void main(String[] args) {
+ int sum = 0;
+ int[][] array1 = new int[11][11];
+ array1[1][2] = 1;
+ array1[2][3] = 2;
+ System.out.println("输出原始的数组");
+
+ for (int [] ints : array1){
+ for (int anInt : ints){
+ System.out.print(anInt + "\t");
+ }
+ System.out.println();
+ }
+ //输出有效值个数
+ for (int i = 0; i < 11; i++) {
+ for (int j = 0; j < 11; j++) {
+ if (array1[i][j] != 0){
+ sum++;
+ }
+ }
+ }
+ System.out.println("有效值的个数："+sum);
+
+ int[][] array2 = new int[sum+1][3];
+ array2[0][0] = 11;
+ array2[0][1] = 11;
+ array2[0][2] = sum;
+
+ int count=0 ;
+ for (int i = 0; i < array1.length; i++) {
+ for (int j = 0; j < array1[i].length; j++) {
+ if (array1[i][j] != 0){
+ count++;
+ array2[count][0] = i;
+ array2[count][1] = j;
+ array2[count][2] = array1[i][j];
+ }
+
+ }
+
+ }
+ System.out.println("稀疏数组");
+ for (int i = 0; i < array2.length; i++) {
+ System.out.println(array2[i][0]+"\t"
+ +array2[i][1]+"\t"
+ +array2[i][2]);
+ }
+
+ //还原
+ int[][] array3 = new int[array2[0][0]][array2[0][1]];
+
+ for (int i = 1; i < array2.length; i++) {
+ array3[array2[i][0]][array2[i][1]] = array2[i][2];
+ }
+
+ System.out.println("输出还原的数组");
+ for (int [] ints : array3){
+ for (int anInt : ints){
+ System.out.print(anInt + "\t");
+ }
+ System.out.println();
+ }
+ }
+}
+
+
+//out：输出原始的数组
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 1 0 0 0 0 0 0 0 0
+//0 0 0 2 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//有效值的个数：2
+//稀疏数组
+//11 11 2
+//1 2 1
+//2 3 2
+//输出还原的数组
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 1 0 0 0 0 0 0 0 0
+//0 0 0 2 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
+//0 0 0 0 0 0 0 0 0 0 0
\ No newline at end of file
diff --git a/java/src/com/susu2568/base/Doc.java b/java/src/com/susu2568/base/Doc.java
new file mode 100644
index 0000000..fdee35d
--- /dev/null
+++ b/java/src/com/susu2568/base/Doc.java
@@ -0,0 +1,19 @@
+package com.susu2568.base;
+/**
+* @author susu2568
+ * @version 1.0
+ * @since 1.15
+ */
+public class Doc {
+ String name;
+
+ /**
+ *
+ * @param name
+ * @return
+ * @throws Exception
+ */
+ public String test(String name) throws Exception{
+ return name;
+ }
+}
diff --git a/java/src/com/susu2568/base/demo01.java b/java/src/com/susu2568/base/demo01.java
new file mode 100644
index 0000000..2d87f75
--- /dev/null
+++ b/java/src/com/susu2568/base/demo01.java
@@ -0,0 +1,13 @@
+package com.susu2568.base;
+
+public class demo01 {
+ public static void main(String[] args) {
+ int a = 1_0000_0000;
+ System.out.println(a);
+ }
+ public void add(){
+
+ }
+}
+//out 100000000
+
diff --git a/java/src/com/susu2568/base/demo02.java b/java/src/com/susu2568/base/demo02.java
new file mode 100644
index 0000000..b54afc5
--- /dev/null
+++ b/java/src/com/susu2568/base/demo02.java
@@ -0,0 +1,10 @@
+package com.susu2568.base;
+
+public class demo02 {
+ int age=10;
+ public static void main(String[] args) {
+ demo02 demo02 = new demo02();
+ System.out.println(demo02.age);
+ }
+}
+// 实例变量的调用
\ No newline at end of file
diff --git a/java/src/com/susu2568/base/demo03.java b/java/src/com/susu2568/base/demo03.java
new file mode 100644
index 0000000..99ff8d2
--- /dev/null
+++ b/java/src/com/susu2568/base/demo03.java
@@ -0,0 +1,9 @@
+package com.susu2568.base;
+
+public class demo03 {
+ static String salary = "2000";
+ public static void main(String[] args) {
+ System.out.println(salary);
+ }
+}
+//类变量
\ No newline at end of file
diff --git a/java/src/com/susu2568/exception/Demo01/Test.java b/java/src/com/susu2568/exception/Demo01/Test.java
new file mode 100644
index 0000000..e4ab423
--- /dev/null
+++ b/java/src/com/susu2568/exception/Demo01/Test.java
@@ -0,0 +1,33 @@
+package com.susu2568.exception.Demo01;
+
+public class Test {
+ public static void main(String[] args) {
+ int a = 1;
+ int b = 0;
+//若需要捕获多个异常 需从小到大
+ try {//监控区域
+ new Test().a();
+ }catch (Throwable e){//捕获异常
+ System.out.println("程序异常");
+ }finally {//做善后工作
+ System.out.println("finally");
+ }
+ //快捷键 ctrl+alt+T
+ try {
+
+ if (b==0) {//throw
+ throw new ArithmeticException();//抛出异常
+ } else {System.out.println(a/b);
+ }
+ } catch (ArithmeticException e) {
+ e.printStackTrace();//打印错误的栈信息
+ } finally {
+ }
+ }
+ public void a(){
+ b();
+ }
+ public void b(){
+ a();
+ }
+}
diff --git a/java/src/com/susu2568/exception/demo02/Test01.java b/java/src/com/susu2568/exception/demo02/Test01.java
new file mode 100644
index 0000000..b2c1c96
--- /dev/null
+++ b/java/src/com/susu2568/exception/demo02/Test01.java
@@ -0,0 +1,18 @@
+package com.susu2568.exception.demo02;
+
+public class Test01 {
+ public void test(int a) throws Exception{
+ if (a>10){
+ throw new myException();
+ }
+ System.out.println("ok");
+ }
+
+ public void main(String[] args) throws Exception {
+ try {
+ test(10);
+ } catch (myException e) {
+ System.out.println("myException=>"+e);
+ }
+ }
+}
diff --git a/java/src/com/susu2568/exception/demo02/myException.java b/java/src/com/susu2568/exception/demo02/myException.java
new file mode 100644
index 0000000..7468738
--- /dev/null
+++ b/java/src/com/susu2568/exception/demo02/myException.java
@@ -0,0 +1,16 @@
+package com.susu2568.exception.demo02;
+
+public class myException extends Exception{
+ private int detail;
+
+ public void myException(int a){
+ this.detail = a;
+ }
+
+ @Override
+ public String toString() {
+ return "myException{" +
+ "detail=" + detail +
+ '}';
+ }
+}
diff --git a/java/src/com/susu2568/method/Demo01.java b/java/src/com/susu2568/method/Demo01.java
new file mode 100644
index 0000000..974ceea
--- /dev/null
+++ b/java/src/com/susu2568/method/Demo01.java
@@ -0,0 +1,12 @@
+package com.susu2568.method;
+
+public class Demo01 {
+ public static void main(String[] args) {
+ Demo01 demo01 = new Demo01();
+ demo01.test();
+
+ }
+ public void test(int... i){
+ System.out.println(i);
+ }
+}
diff --git a/java/src/com/susu2568/method/Demo02.java b/java/src/com/susu2568/method/Demo02.java
new file mode 100644
index 0000000..9baa926
--- /dev/null
+++ b/java/src/com/susu2568/method/Demo02.java
@@ -0,0 +1,31 @@
+package com.susu2568.method;
+
+public class Demo02 {
+ public static void main(String[] args) {
+ printMax(34, 3, 3, 2, 56.5);
+ printMax(new double[]{1, 2, 3});
+
+ }
+
+ public static void printMax(double... numbers) {
+ if (numbers.length == 0) {
+ System.out.println("No argument passed");
+ return;
+ }
+ double result = numbers[0];
+
+ for (int i = 0; i < numbers.length; i++) {
+ if (numbers[i] > result) {
+ result = numbers[i];
+ }
+ }
+ System.out.println("The max value is " + result);
+ }
+}
+
+
+//out:
+//The max value is 56.5
+// The max value is 3.0
+
+
diff --git a/java/src/com/susu2568/method/Demo03.java b/java/src/com/susu2568/method/Demo03.java
new file mode 100644
index 0000000..508f31b
--- /dev/null
+++ b/java/src/com/susu2568/method/Demo03.java
@@ -0,0 +1,14 @@
+package com.susu2568.method;
+
+public class Demo03 {
+ public static void main(String[] args) {
+ System.out.println(f(3));
+ }
+ public static int f(int n){
+ if (n==1){
+ return 1;
+ }else {
+ return n*f(n-1);
+ }
+ }
+}
diff --git a/java/src/com/susu2568/oop/Application.java b/java/src/com/susu2568/oop/Application.java
new file mode 100644
index 0000000..82be9b4
--- /dev/null
+++ b/java/src/com/susu2568/oop/Application.java
@@ -0,0 +1,22 @@
+package com.susu2568.oop;
+
+import com.susu2568.oop.Demo03.Person;
+import com.susu2568.oop.Demo03.Worker;
+
+public class Application {
+ public static void main(String[] args) {
+ //一个方法的实际类型是确定的
+ //可以指向的引用类型是不确定的
+// Worker s1 = new Worker();
+// Person s2 = new Worker();
+
+ Object object = new Worker();
+ System.out.println(object instanceof Object);
+ System.out.println(object instanceof Person);
+ System.out.println(object instanceof Worker);
+ //instanceof---类型转换
+ //System.out.println(X instanceof Y);--- X Y 是否存在父子关系
+ //方法类型的转换----父----->子 直接转换
+ // 父<-----子 强制转换 可能会丢失一些方法
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo01/Application.java b/java/src/com/susu2568/oop/Demo01/Application.java
new file mode 100644
index 0000000..8aaac70
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo01/Application.java
@@ -0,0 +1,11 @@
+package com.susu2568.oop.Demo01;
+//一个项目只有一个main方法
+public class Application {
+ public static void main(String[] args) {
+ Student student = new Student();
+ student.name = "小明";
+ student.age = 9;
+ student.age();
+ student.study();
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo01/Student.java b/java/src/com/susu2568/oop/Demo01/Student.java
new file mode 100644
index 0000000..8154cb1
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo01/Student.java
@@ -0,0 +1,14 @@
+package com.susu2568.oop.Demo01;
+//学生类
+public class Student {
+ String name ;
+ int age ;
+
+ public void study(){
+ System.out.println(this.name+"在学习");
+ }
+
+ public void age() {
+ System.out.println("年龄:"+this.age+"岁");
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo02/A.java b/java/src/com/susu2568/oop/Demo02/A.java
new file mode 100644
index 0000000..59d6cb0
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo02/A.java
@@ -0,0 +1,10 @@
+package com.susu2568.oop.Demo02;
+
+public class A extends B{
+
+ //重写----alt+ins
+ @Override//注解---有功能的注释
+ public void test() {
+ System.out.println("A=>test()");
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo02/B.java b/java/src/com/susu2568/oop/Demo02/B.java
new file mode 100644
index 0000000..c40fc95
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo02/B.java
@@ -0,0 +1,7 @@
+package com.susu2568.oop.Demo02;
+
+public class B {
+ public void test(){
+ System.out.println("B=>test()");
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo02/person.java b/java/src/com/susu2568/oop/Demo02/person.java
new file mode 100644
index 0000000..0e0e843
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo02/person.java
@@ -0,0 +1,21 @@
+package com.susu2568.oop.Demo02;
+
+public class person {
+ String name;
+
+ public person() {
+ }
+
+ public person(String name) {
+ this.name = name;
+ }
+
+
+ public void say(){
+ System.out.println("说");
+ }
+
+ protected int age = 20;
+}
+
+//alt + inscrlk 生成构造器
diff --git a/java/src/com/susu2568/oop/Demo02/teacher.java b/java/src/com/susu2568/oop/Demo02/teacher.java
new file mode 100644
index 0000000..e9c3e98
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo02/teacher.java
@@ -0,0 +1,21 @@
+package com.susu2568.oop.Demo02;
+
+public class teacher extends person{
+ public static void main(String[] args) {
+ teacher teacher = new teacher();
+ teacher.say();
+ }
+
+ private int age = 9;
+ public void test(int age){
+ System.out.println(age);
+ System.out.println(this.age);
+ System.out.println(super.age);
+ }
+}
+
+
+// ctrl + H 显示继承关系
+// object 类 所有类默认继承
+//只有单继承------一个儿子只有一个爸爸
+// 一个爸爸可以有多个儿子
\ No newline at end of file
diff --git a/java/src/com/susu2568/oop/Demo03/C.java b/java/src/com/susu2568/oop/Demo03/C.java
new file mode 100644
index 0000000..7019082
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo03/C.java
@@ -0,0 +1,5 @@
+package com.susu2568.oop.Demo03;
+
+public class C extends D{
+
+}
diff --git a/java/src/com/susu2568/oop/Demo03/D.java b/java/src/com/susu2568/oop/Demo03/D.java
new file mode 100644
index 0000000..a3a3eda
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo03/D.java
@@ -0,0 +1,6 @@
+package com.susu2568.oop.Demo03;
+//abstract 抽象类 类： extends 只能单继承 接口可以多继承
+public abstract class D {
+ //不能new 抽象类 只能靠子类去实现
+ //抽象类与抽象方法相对应
+}
diff --git a/java/src/com/susu2568/oop/Demo03/Person.java b/java/src/com/susu2568/oop/Demo03/Person.java
new file mode 100644
index 0000000..8c00066
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo03/Person.java
@@ -0,0 +1,4 @@
+package com.susu2568.oop.Demo03;
+
+public class Person extends Object{
+}
diff --git a/java/src/com/susu2568/oop/Demo03/Worker.java b/java/src/com/susu2568/oop/Demo03/Worker.java
new file mode 100644
index 0000000..560be79
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo03/Worker.java
@@ -0,0 +1,4 @@
+package com.susu2568.oop.Demo03;
+
+public class Worker extends Person{
+}
diff --git a/java/src/com/susu2568/oop/Demo04/userService.java b/java/src/com/susu2568/oop/Demo04/userService.java
new file mode 100644
index 0000000..ed6edf0
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo04/userService.java
@@ -0,0 +1,9 @@
+package com.susu2568.oop.Demo04;
+//接口
+//接口中所有定义为抽象的
+public interface userService {
+ void add();
+ void delete();
+ void update();
+ void query();
+}
diff --git a/java/src/com/susu2568/oop/Demo04/userServiceImpl.java b/java/src/com/susu2568/oop/Demo04/userServiceImpl.java
new file mode 100644
index 0000000..660a2b2
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo04/userServiceImpl.java
@@ -0,0 +1,23 @@
+package com.susu2568.oop.Demo04;
+
+public class userServiceImpl implements userService{
+ @Override
+ public void add() {
+
+ }
+
+ @Override
+ public void delete() {
+
+ }
+
+ @Override
+ public void update() {
+
+ }
+
+ @Override
+ public void query() {
+
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo05/Application.java b/java/src/com/susu2568/oop/Demo05/Application.java
new file mode 100644
index 0000000..b951919
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo05/Application.java
@@ -0,0 +1,10 @@
+package com.susu2568.oop.Demo05;
+
+public class Application {
+ public static void main(String[] args) {
+ Outer outer = new Outer();
+ //通过外部类来实例化内部类
+ Outer.Inter inter = outer.new Inter();
+ inter.getId();
+ }
+}
diff --git a/java/src/com/susu2568/oop/Demo05/Outer.java b/java/src/com/susu2568/oop/Demo05/Outer.java
new file mode 100644
index 0000000..ce18c97
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo05/Outer.java
@@ -0,0 +1,20 @@
+package com.susu2568.oop.Demo05;
+
+public class Outer {
+ private int id=20;
+ public void out(){
+ System.out.println("这是一个外部类");
+ }
+
+ public class Inter{
+ public void in(){
+ System.out.println("这是一个内部类");
+ }
+
+ //获得外部类的私有属性
+ public void getId(){
+ System.out.println(id);
+ }
+ }
+
+}
diff --git a/java/src/com/susu2568/oop/Demo05/Test.java b/java/src/com/susu2568/oop/Demo05/Test.java
new file mode 100644
index 0000000..67f5391
--- /dev/null
+++ b/java/src/com/susu2568/oop/Demo05/Test.java
@@ -0,0 +1,22 @@
+package com.susu2568.oop.Demo05;
+//匿名类
+public class Test {
+ public static void main(String[] args) {
+ new Apple().eat();
+ new userService() {
+ @Override
+ public void hello() {
+ }
+ };
+ }
+}
+
+class Apple{
+ public void eat(){
+ System.out.println("1");
+ }
+}
+
+interface userService{
+ void hello();
+}
\ No newline at end of file
diff --git a/java/src/com/susu2568/scanner/Demo01.java b/java/src/com/susu2568/scanner/Demo01.java
new file mode 100644
index 0000000..59a75dc
--- /dev/null
+++ b/java/src/com/susu2568/scanner/Demo01.java
@@ -0,0 +1,26 @@
+package com.susu2568.scanner;
+
+
+import java.util.Scanner;
+
+public class Demo01 {
+ public static void main(String[] args) {
+ Scanner scanner = new Scanner(System.in);
+ System.out.println("使用next方法接收：");
+ if(scanner.hasNextLine()){
+ String str = scanner.nextLine();
+ System.out.println("输出的内容为："+str);
+ scanner.close();
+ }
+ }
+//out:
+// 使用next方法接收：
+// hello world
+// 输出的内容为：hello world
+
+
+}
+//out :
+// 使用next方法接收：
+//hello wrold
+//输出的内容为：hello
\ No newline at end of file
diff --git a/java/src/com/susu2568/test/Solution.java b/java/src/com/susu2568/test/Solution.java
new file mode 100644
index 0000000..850c3dd
--- /dev/null
+++ b/java/src/com/susu2568/test/Solution.java
@@ -0,0 +1,16 @@
+package com.susu2568.test;
+
+import java.util.Arrays;
+
+public class Solution {
+ public int arrayPairSum(int[] nums) {
+ Arrays.sort(nums);
+ int ans = 0;
+ for (int i = 0; i < nums.length; i += 2) {
+ ans += nums[i];
+ }
+ return ans;
+ }
+
+
+}