以下MyCompilingUtility.java通过AutoGenerated.java创建文件（Java类 - PrintWriter）。该类只有一个带有print语句的Main方法。其次，该程序调用{{1}}。
javac AutoGenerated.java但是，在运行public static void main(String args[]) throws IOException,
FileNotFoundException, UnsupportedEncodingException {
createFile("AutoGenerated.java");
compile("AutoGenerated.java");
}
public static void compile(String fileName) throws IOException {
final String javacPath = "C:/Program Files/Java/jdk1.7.0_51/bin/javac.exe";
Runtime rt = Runtime.getRuntime();
final String compileCmd = javacPath + " " + fileName;
rt.exec(compileCmd);
}
public static void createFile(String fileName) throws FileNotFoundException,
UnsupportedEncodingException {
PrintWriter writer = new PrintWriter(fileName, "UTF-8");
writer.println("public class AutoGenerated");
writer.println("{");
writer.println(" public static void main(String [] args)");
writer.println(" {");
writer.println(" System.out.println(\"Hello from AutoGenerated World\")");
writer.println(" }");
writer.println("}");
writer.close();
}
后，没有生成javac MyCompilingUtility.java && java MyCompilingUtility个文件。
为什么？
答案 0 :(得分：1)
你在
结尾处遗漏了;
writer.println(" System.out.println(\"Hello from AutoGenerated World\");");
^
编译器无法编译它。