各位大侠;
例:
String code=null;
code=" try {consoledao.loadConsoleAll(transtableId,transtableName,fieldtable);"
+" } catch (DataException e) {"
+"e.printStackTrace();}";
如何将code中的字符串转成代码在java中运行?
例:
String code=null;
code=" try {consoledao.loadConsoleAll(transtableId,transtableName,fieldtable);"
+" } catch (DataException e) {"
+"e.printStackTrace();}";
如何将code中的字符串转成代码在java中运行?
例子
http://blog.csdn.net/treeroot/archive/2005/10/10/498801.aspx
code=" try {consoledao.loadConsoleAll(transtableId,transtableName,fieldtable);"
+" } catch (DataException e) {"
+"e.printStackTrace();}";
PrintWriter writer = new PrintWriter(new FileWriter(new File(className + ".java")));
writer.println(code);
writer.close();
Runtime.getRuntime().exec("javac -d . className" + ".java");
Class c = Class.forName(className);
Object o = c.newInstance();
Method [] methods = c.getMethods();
for (int i = 0; i < methods.length; i++) {
Object result = methods[i].invoke(o,new Object[argsNum]);
System.out.println(result);
}
问题1:java文件写到哪里了?
问题2:javac是否可以执行,path路径能否找到javac?
问题3:生成的class文件放在哪里?
问题4:Class.forName可以加载到这个类文件吗?