kotlin方言

环境：
mac 安装 kotlin
sudo brew install kotlin
ide: idea
先测试java

public class allen {
    public static void  main(String[] args) {
        System.out.println("fuck you java");
    }
}

liuhailongdeAir:src liuhailong$ ls
allen.java
liuhailongdeAir:src liuhailong$ java allen.java
错误: 找不到或无法加载主类 allen.java
liuhailongdeAir:src liuhailong$ javac allen.java
liuhailongdeAir:src liuhailong$ ls
allen.class allen.java
liuhailongdeAir:src liuhailong$ java allen.class 
错误: 找不到或无法加载主类 allen.class
liuhailongdeAir:src liuhailong$ java allen.
错误: 找不到或无法加载主类 allen.
liuhailongdeAir:src liuhailong$ java allen
1d 37 1d 37 c 13 15 10 10 26 d 2f 1b 10 40 40  
3t3tMTVQQcNl1Q//
liuhailongdeAir:src liuhailong$ javac allen.java
liuhailongdeAir:src liuhailong$ java allen
fuck you java
liuhailongdeAir:src liuhailong$

kotlin方言
kotlin编译：
第一种方式：（出错）
kotlinc test.kt -include-runtime 或kotlinc test.kt -include-runtime -d allen
java TestKt

fun main(args: Array<String>) {
    println("fuck you kotlin");
}

liuhailongdeAir:src liuhailong$ ls
test.kt
liuhailongdeAir:src liuhailong$ kotlin test.kt -include-runtime
error: could not find or load main class test.kt
liuhailongdeAir:src liuhailong$ kotlinc test.kt -include-runtime
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    test.kt
liuhailongdeAir:src liuhailong$ javap TestKt.class 
Compiled from "test.kt"
public final class TestKt {
  public static final void main(java.lang.String[]);
}
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    test.kt
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    test.kt
liuhailongdeAir:src liuhailong$ kotlinc test.kt -include-runtime 
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    test.kt
liuhailongdeAir:src liuhailong$ java TestKt.class 
错误: 找不到或无法加载主类 TestKt.class
liuhailongdeAir:src liuhailong$ java TestKt
Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
    at TestKt.main(test.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 1 more
liuhailongdeAir:src liuhailong$ kotlinc test.kt -include-runtime 
liuhailongdeAir:src liuhailong$ kotlinc test.kt -include-runtime  -d allen
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    allen       test.kt
liuhailongdeAir:src liuhailong$ cd allen
liuhailongdeAir:allen liuhailong$ ls
META-INF    TestKt.class
liuhailongdeAir:allen liuhailong$ java TestKt.class
错误: 找不到或无法加载主类 TestKt.class
liuhailongdeAir:allen liuhailong$ java TestKt
Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/jvm/internal/Intrinsics
    at TestKt.main(test.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.jvm.internal.Intrinsics
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 1 more
liuhailongdeAir:allen liuhailong$

kotlin方言
第二种方式
kotlinc test.kt -include-runtime -d allen.jar
java -jar allen.jar

liuhailongdeAir:allen liuhailong$ kotlinc test.kt -include-runtime  -d allen.jar
error: source file or directory not found: test.kt
liuhailongdeAir:allen liuhailong$ cd ..
liuhailongdeAir:src liuhailong$ cd ..
liuhailongdeAir:testa liuhailong$ ls
out     src     testa.iml
liuhailongdeAir:testa liuhailong$ cd src/
liuhailongdeAir:src liuhailong$ kotlinc test.kt -include-runtime  -d allen.jar
liuhailongdeAir:src liuhailong$ ls
META-INF    TestKt.class    allen       allen.jar   test.kt
liuhailongdeAir:src liuhailong$ java -jar allen.jar 
fuck you kotlin
liuhailongdeAir:src liuhailong$

原因是他自动生成一个类，还有很多依赖项（同时自动改名）
解压 jar 包
kotlin方言
查看 class 文件

liuhailongdeAir:IdeaProjects liuhailong$ ls
testa       testjava    testkotlin
liuhailongdeAir:IdeaProjects liuhailong$ cd testa
liuhailongdeAir:testa liuhailong$ ls
out     src     testa.iml
liuhailongdeAir:testa liuhailong$ cd src/
liuhailongdeAir:src liuhailong$ ls
META-INF    allen       test.kt
TestKt.class    allen.jar
liuhailongdeAir:src liuhailong$ javap TestKt.class 
Compiled from "test.kt"
public final class TestKt {
  public static final void main(java.lang.String[]);
}
liuhailongdeAir:src liuhailong$

因此在 idea 中有个设置入口类名称就是填对应的名称加 Kt ，同时第一个字母要大写
kotlin方言
方言：

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