package com.JavaCommandChecker;
import javax.tools.*;
import java.io.StringWriter;
import java.net.URI;
import java.util.*;
public class JavaCommandChecker {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println(“Gib deinen Java-Code ein:”);
String input = scanner.nextLine();
checkJavaCommand(input);
scanner.close();
}
public static void checkJavaCommand(String command) {
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<>();
StringWriter writer = new StringWriter();
SimpleJavaFileObject fileObject = new SimpleJavaFileObject(URI.create(“string:///” + “Test.java”), JavaFileObject.Kind.SOURCE) {
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return command;
}
};
List<JavaFileObject> fileList = Collections.singletonList(fileObject);
JavaCompiler.CompilationTask task = compiler.getTask(writer, null, diagnostics, null, null, fileList);
boolean success = task.call();
if (!success) {
System.out.println(“Fehler beim Kompilieren des Java-Codes:”);
for (Diagnostic<? extends JavaFileObject> diagnostic : diagnostics.getDiagnostics()) {
System.out.format(“Fehlermeldung: %s in Zeile %d%n”,
diagnostic.getMessage(null), diagnostic.getLineNumber());
}
} else {
System.out.println(“Der Java-Code ist syntaktisch korrekt.”);
}
}
}