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Kotlin-Demo
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Bunny 2024-08-12 23:58:38 +08:00
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8
.idea/.gitignore vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

12
.idea/Kotlin-Demo.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="KotlinJavaRuntime" level="project" />
</component>
</module>

5
.idea/codeStyles/codeStyleConfig.xml Normal file
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<component name="ProjectCodeStyleConfiguration">
<state>
<option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
</state>
</component>

6
.idea/kotlinc.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Kotlin2JvmCompilerArguments">
<option name="jvmTarget" value="1.8" />
</component>
</project>

23
.idea/libraries/KotlinJavaRuntime.xml Normal file
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<component name="libraryTable">
<library name="KotlinJavaRuntime" type="repository">
<properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.24" />
<CLASSES>
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.24/kotlin-stdlib-jdk8-1.9.24.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.24/kotlin-stdlib-1.9.24.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.24/kotlin-stdlib-jdk7-1.9.24.jar!/" />
</CLASSES>
<JAVADOC>
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.24/kotlin-stdlib-jdk8-1.9.24-javadoc.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.24/kotlin-stdlib-1.9.24-javadoc.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-javadoc.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.24/kotlin-stdlib-jdk7-1.9.24-javadoc.jar!/" />
</JAVADOC>
<SOURCES>
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.24/kotlin-stdlib-jdk8-1.9.24-sources.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.24/kotlin-stdlib-1.9.24-sources.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-sources.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.24/kotlin-stdlib-jdk7-1.9.24-sources.jar!/" />
</SOURCES>
</library>
</component>

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.idea/misc.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="21" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/out" />
</component>
</project>

8
.idea/modules.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/.idea/Kotlin-Demo.iml" filepath="$PROJECT_DIR$/.idea/Kotlin-Demo.iml" />
</modules>
</component>
</project>

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.idea/uiDesigner.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Palette2">
<group name="Swing">
<item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
</item>
<item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
</item>
<item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
</item>
<item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
<default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
</item>
<item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
<initial-values>
<property name="text" value="Button" />
</initial-values>
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<item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
<initial-values>
<property name="text" value="RadioButton" />
</initial-values>
</item>
<item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
<initial-values>
<property name="text" value="CheckBox" />
</initial-values>
</item>
<item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
<default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
<initial-values>
<property name="text" value="Label" />
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<item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
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<preferred-size width="150" height="-1" />
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
<preferred-size width="150" height="-1" />
</default-constraints>
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<item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
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<item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
<preferred-size width="150" height="50" />
</default-constraints>
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<item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
<preferred-size width="150" height="50" />
</default-constraints>
</item>
<item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
<preferred-size width="150" height="50" />
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<default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
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<default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
<preferred-size width="-1" height="20" />
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<item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
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<default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
</item>
</group>
</component>
</project>

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BasicSyntax-Loop.kt Normal file
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val items = listOf("apple", "banana", "kiwifruit")
fun main() {
for (item in items) {
println(item)
}
println("----------------")
for (index in items.indices) {
println("item 在 $index 是 ${items[index]}")
}
println("----------------像是Switch--------------")
println(describe(1))
println(describe("Hello"))
println(describe(1000L))
println(describe(2))
println(describe("other"))
println("----------------Ranges------------")
rangeTest()
println("----------------for..in..------------")
forTest()
}
// 使用when
fun describe(obj: Any): Any = when (obj) {
1 -> "是一"
"Hello" -> "Greeting"
is Long -> "Long"
!is String -> "Not a string"
else -> "Unknown"
}
// 范围测试
fun rangeTest() {
val x = 10
val y = 100
if (x in 1..y + 1) {
println("1 在这个范围里")
}
if (-1 !in 1..y + 1) {
println("-1 不在这个范围里")
}
}
fun forTest() {
for (x in 1..5) {
println(x)
}
}

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jTest/FIleCopyBase.java Normal file
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package jTest;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Map;
public class FIleCopyBase {
public static void main(String[] args) throws IOException {
Path source = Path.of("D:\\Project\\demo\\source\\神偷奶爸4.ts");
Path target = Path.of("D:\\Project\\demo\\target\\神偷奶爸4.ts");
// 复制速度很快
Path copyPath = Files.copy(source, target);
System.out.println("输出复制完成后的路径" + copyPath);
// 删除文件，文件不存在或者目录不存在会抛出异常
Files.delete(target);
// 删除文件如果存在就删除，不存在不会抛出异常
Files.deleteIfExists(target);
// 移动文件
Path movePath = Files.move(source, target);
System.out.println("输出移动完成后的路径" + movePath);
// 判断文件是否存在
boolean exists = Files.exists(source);
System.out.println(exists);
// 是否为隐藏文件
boolean hidden = Files.isHidden(target);
System.out.println(hidden);
// 判断是否为目录
boolean directory = Files.isDirectory(target);
System.out.println(directory);
// 检查指定路径是否可读取。当文件或目录具有读取权限时，Files.isReadable() 方法将返回 true，否则返回 false。
boolean readable = Files.isReadable(target);
System.out.println(readable);
// 表示是否是可执行的文件
boolean executable = Files.isExecutable(target);
System.out.println(executable);
// 是否表示一个常规文件，是指不是目录或符号链接的文件
boolean regularFile = Files.isRegularFile(target);
System.out.println(regularFile);
// 检查文件是否相同
Files.copy(target, source);
boolean sameFile = Files.isSameFile(target, source);
System.out.println(sameFile);
// 是否表示一个符号链接
boolean symbolicLink = Files.isSymbolicLink(target);
System.out.println(symbolicLink);
// 文件按字节的大小
long size = Files.size(target);
System.out.println(size);
// 读取指定文件的属性，如果第二个参数为空字符串，将返回所有基本文件属性。
// {lastAccessTime=2024-08-10T15:37:23.5577285Z, lastModifiedTime=2024-08-10T08:18:39.377836Z, size=1158625012, creationTime=2024-08-10T15:12:56.5838403Z, isSymbolicLink=false, isRegularFile=true, fileKey=null, isOther=false, isDirectory=false}
Map<String, Object> stringObjectMap = Files.readAttributes(source, "basic:*");
System.out.println(stringObjectMap);
}
}

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jTest/HasMapTest.java Normal file
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package jTest;
import java.util.HashMap;
public class HasMapTest {
public static void main(String[] args) {
// 如果使用的是 Map 没用直接的 forEach
HashMap<String, Object> hashMap = new HashMap<>();
hashMap.put("a", 1);
hashMap.put("b", 2);
hashMap.put("c", 3);
hashMap.put("d", 4);
hashMap.put("e", 5);
// 如果在这个Map中没用找到这个键返回默认的值 666
System.out.println(hashMap.getOrDefault("n", 666));
// 拿到a的键
System.out.println(hashMap.get("a"));
// 是否包含键 a
System.out.println(hashMap.containsKey("a"));
// 是否包含值
System.out.println(hashMap.containsValue(1));
// 遍历 hashMap
hashMap.forEach((s, o) -> {
System.out.println("key：" + s);
System.out.println("value：" + o);
});
hashMap.entrySet().forEach(System.out::println);
// 将所以的键都添加到 hashMap 中
HashMap<String, Object> addAllMap = new HashMap<>();
addAllMap.put("f", 6);
addAllMap.put("g", 7);
addAllMap.put("h", 8);
addAllMap.put("i", 9);
hashMap.putAll(addAllMap);
System.out.println(hashMap);
}
}

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jTest/HashSetTest.java Normal file
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package jTest;
import java.util.HashSet;
import java.util.NavigableSet;
import java.util.SortedSet;
import java.util.TreeSet;
public class HashSetTest {
public static void main(String[] args) {
// 删除重复的元素
HashSet<String> hashSet = new HashSet<>() {
{
add("a");
add("b");
add("c");
add("d");
add("e");
add("a");
}
};
System.out.println(hashSet);// [a, b, c, d, e]
hashSet.forEach(System.out::println);
// TreeSet 会自动排序，即使是乱序也会自动排序
TreeSet<String> treeSet = new TreeSet<>() {
{
add("a");
add("b");
add("d");
add("e");
add("c");
}
};
System.out.println(treeSet);// [a, b, c, d, e]
treeSet.forEach(System.out::println);
// 排序Tree
SortedSet<String> sortedSet = new TreeSet<>() {{
add("a");
add("b");
add("d");
add("e");
add("c");
}};
System.out.println(sortedSet);// [a, b, c, d, e]
sortedSet.forEach(System.out::println);
NavigableSet<String> navigableSet = new TreeSet<>() {{
add("a");
add("b");
add("d");
add("e");
add("c");
}};
System.out.println(navigableSet);// [a, b, c, d, e]
// 大于a的元素，没用返回null
System.out.println(navigableSet.higher("a"));// b
// 小于a的元素，没用返回null
System.out.println(navigableSet.lower("a"));// null
// 小于等于b的元素，没有返回null
System.out.println(navigableSet.floor("b"));// b
// 大于等于 a 的元素，没用返回null
System.out.println(navigableSet.ceiling("a"));// a
// 删除第一个元素
navigableSet.pollFirst();
System.out.println(navigableSet);// [b, c, d, e]
// 删除最后一个元素
navigableSet.pollLast();
System.out.println(navigableSet);// [b, c, d]
}
}

40
jTest/TreeMapTest.java Normal file
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package jTest;
import java.util.SortedMap;
import java.util.TreeMap;
public class TreeMapTest {
public static void main(String[] args) {
TreeMap<String, Object> treeMap = new TreeMap<>() {{
put("c", 3);
put("a", 1);
put("b", 2);
put("e", 5);
put("d", 4);
}};
// 会自动排序
System.out.println(treeMap);
// 遍历集合
treeMap.forEach((key, value) -> {
System.out.println("key：" + key);
System.out.println("value：" + value);
});
SortedMap<String, Object> sortedMap = new TreeMap<>() {{
put("c", 3);
put("a", 1);
put("b", 2);
put("e", 5);
put("d", 4);
}};
// 拿到第一个值
System.out.println(sortedMap.firstKey());
// 最后一个值
System.out.println(sortedMap.lastKey());
}
}

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out/production/Kotlin-Demo/.idea/.gitignore vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

12
out/production/Kotlin-Demo/.idea/Kotlin-Demo.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="KotlinJavaRuntime" level="project" />
</component>
</module>

5
out/production/Kotlin-Demo/.idea/codeStyles/codeStyleConfig.xml Normal file
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<component name="ProjectCodeStyleConfiguration">
<state>
<option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
</state>
</component>

6
out/production/Kotlin-Demo/.idea/kotlinc.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Kotlin2JvmCompilerArguments">
<option name="jvmTarget" value="1.8" />
</component>
</project>

23
out/production/Kotlin-Demo/.idea/libraries/KotlinJavaRuntime.xml Normal file
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<component name="libraryTable">
<library name="KotlinJavaRuntime" type="repository">
<properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.24" />
<CLASSES>
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.24/kotlin-stdlib-jdk8-1.9.24.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.24/kotlin-stdlib-1.9.24.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
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package test1
fun main() {
println("Hello world!")
}
var x = 2
var y: Int = 2
val z: Int = 2
fun main(array: Array<String>) {
println(array.contentToString())
print("Hello ")
print("world!\n")
main()
println(42)
val sum = sum(1, 2)
println(sum)
val sum2 = sum2(1, 6)
println(sum2)
println("总和为：$sum and $sum2 那么sum和sum2相加为：${sum + sum2}")
val basicSyntax = BasicSyntax(2.0000, 6.0)
println(basicSyntax.percent)
// 模板字符串
var a = 1
val b = "a 是 $a"
a = 2
val c = "${b.replace("是", "就是")}，但是现在的a是 $a"
println(c)
// 返回最大值
println(BasicSyntax(1.0,2.0).maxOf(1, 2))
println(BasicSyntax(1.0,2.0).maxOf2(1, 2))
println(maxOf3(1, 2))
// 循环
val items = listOf("11", "22", "23", "24", "25")
for (item in items) {
println(item)
}
for (index in items.indices) {
println(index)
}
}
fun sum(a: Int, b: Int): Int {
return a + b
}
fun sum2(a: Int, b: Int) = a + b
class BasicSyntax(height: Double, length: Double) {
val percent = (height + length) * 2
fun maxOf(a: Int, b: Int): Int {
if (a > b) {
return a
} else {
return b
}
}
fun maxOf2(a: Int, b: Int): Int {
return if (a > b) {
a
} else {
b
}
}
}
/* The comment starts here
/* contains a nested comment */
and ends here. */
fun maxOf3(a:Int,b:Int)=if (a>b)a else b