Coverage Summary for Class: JPMSKt (dev.suresh.lang)

 package dev.suresh.lang
 
 import com.javax0.sourcebuddy.Compiler
 import java.io.*
 import java.lang.invoke.*
 import java.lang.reflect.Modifier
 import java.security.*
 import java.util.*
 import java.util.spi.*
 
 fun main() {
   run()
 }
 
 fun run() {
   val modules = ModuleLayer.boot().modules()
   println("\nFound ${modules.size} jdk modules!")
 
   val jsModule =
       ModuleLayer.boot().findModule("jdk.jshell").orElseGet { error("No JShell module found!") }
 
   // Using Tool API
   jsModule.classLoader.using {
     val sl = ServiceLoader.load(javax.tools.Tool::class.java)
     val jShell = sl.first { it.name() == "jshell" }
     println(jShell.name())
   }
 
   // Using new ToolsProvider API
   val jdeps =
       ToolProvider.findFirst("jdeps").orElseGet { error("jdeps tool is missing in the JDK!") }
   val out = StringWriter()
   val pw = PrintWriter(out)
   jdeps.run(pw, pw, "--version")
 
   val version = out.toString()
   println("jdeps version: $version")
 
   // compileJava()
   // showAllSecurityProperties()
 }
 
 fun reflections() {
   println("String isFinal = ${Modifier.isFinal(String::class.java.modifiers)}")
 }
 
 fun compileJava() {
   Compiler.java()
       .from(
           """
       | package dev.suresh;
       | public class TestApp implements Runnable {
       |    @Override
       |    public void run() {
       |      System.out.println("Hello from TestApp!");
       |    }
       | }
       """
               .trimMargin())
       .compile()
       .load()
       .newInstance(Runnable::class.java)
       .run()
 }
 
 /** @see [VarHandles](https://www.baeldung.com/java-variable-handles) */
 private fun showAllSecurityProperties() {
   // Should add this VM args "--add-opens=java.base/java.security=ALL-UNNAMED"
   val lookup = MethodHandles.lookup()
   val varHandle =
       MethodHandles.privateLookupIn(Security::class.java, lookup)
           .findStaticVarHandle(Security::class.java, "props", Properties::class.java)
   val sec = varHandle.get() as Properties
   sec.forEach { k: Any, v: Any -> println("$k --> $v") }
 }