"dynamically create the instance"+ of a JAVA class?
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In Java, "dynamically" is the *only* way to create\nan instance of a class (since unlike C++, it does\nnot allow static or stack-based objects).  Sample\nsyntax is:\n\n    Rectangle rectOne = new Rectangle(originOne, 100, 200);
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If you have the JDK installed ( else its here : http://java.sun.com/j2ee/1.4/download.html#sdk )\nand your classpath set \n( add CLASSPATH variable in your environmnet variables - MY Comp rt click properties > Advanced> Environment Variable > new variable >\n\nVariable : CLASSPATH \nValue    : .; \n\nAlso set PATH : <path of your JDK bin folder>\n)\n\nNow write your program in notepad , open cmd, and type \njavac myfile.java \n\nthe filename = classname and is case specific.\nthen if it results in zero errors, \n\ntype:\n\njava myfile\n\nthat would run your program
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Try the Java reference library.  Here is a link to it online:
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Set a variable to equal the File instancee you obtained when you used a JFilechooser to open the file.  Rather than using a JFileChooser to do the save, just use the variable you set earlier to determine where to save.  Note that for purposes of external GUI consistency, such a save should be called "save", not "save as".
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What do you mean by java class?
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Creating a PreparedStatement Object\n-----------------------------------\n    As with Statement objects, you create PreparedStatement objects with a Connection method. Using our open connection con from previous examples, you might write code such as the following to create a PreparedStatement object that takes two input parameters:\n\n        PreparedStatement updateSales = con.prepareStatement(\n            "UPDATE COFFEES SET SALES = ? WHERE COF_NAME LIKE ?");\n\n    The variable updateSales now contains the SQL statement, "UPDATE COFFEES SET SALES = ? WHERE COF_NAME LIKE ?" , which has also, in most cases, been sent to the DBMS and been precompiled.\n\nSupplying Values for PreparedStatement Parameters\n-------------------------------------------------\n    You will need to supply values to be used in place of the question mark placeholders, if there are any, before you can execute a PreparedStatement object. You do this by calling one of the setXXX methods defined in the class PreparedStatement . If the value you want to substitute for a question mark is a Java int , you call the method setInt. If the value you want to substitute for a question mark is a Java String , you call the method setString , and so on. In general, there is a setXXX method for each type in the Java programming language.\n\n    Using the PreparedStatement object updateSales from the previous example, the following line of code sets the first question mark placeholder to a Java int with a value of 75:\n\n        updateSales.setInt(1, 75);\n\n    As you might surmise from the example, the first argument given to a setXXX method indicates which question mark placeholder is to be set, and the second argument indicates the value to which it is to be set. The next example sets the second placeholder parameter to the string " Colombian ":\n\n        updateSales.setString(2, "Colombian");\n\n    After these values have been set for its two input parameters, the SQL statement in updateSales will be equivalent to the SQL statement in the String object updateString that we used in the previous update example. Therefore, the following two code fragments accomplish the same thing:\n\n    Code Fragment 1:\n\n        String updateString = "UPDATE COFFEES SET SALES = 75 " + \n              "WHERE COF_NAME LIKE 'Colombian'";\n        stmt.executeUpdate(updateString);\n\n    Code Fragment 2:\n\n        PreparedStatement updateSales = con.prepareStatement(\n        "UPDATE COFFEES SET SALES = ? WHERE COF_NAME LIKE ? ");\n        updateSales.setInt(1, 75); \n        updateSales.setString(2, "Colombian"); \n        updateSales.executeUpdate():\n\n    We used the method executeUpdate to execute both the Statement stmt and the PreparedStatement updateSales . Notice, however, that no argument is supplied to executeUpdate when it is used to execute updateSales . This is true because updateSales already contains the SQL statement to be executed.\n\n    Looking at these examples, you might wonder why you would choose to use a PreparedStatement object with parameters instead of just a simple statement, since the simple statement involves fewer steps. If you were going to update the SALES column only once or twice, then there would be no need to use an SQL statement with input parameters. If you will be updating often, on the other hand, it might be much easier to use a PreparedStatement object, especially in situations where you can use a for loop or while loop to set a parameter to a succession of values. You will see an example of this later in this section.\n\n    Once a parameter has been set with a value, it will retain that value until it is reset to another value or the method clearParameters is called. Using the PreparedStatement object updateSales , the following code fragment illustrates reusing a prepared statement after resetting the value of one of its parameters and leaving the
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it needs java oriented scripting. u can find it in the following addersses.
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A constructor is a piece of code that is called when an instance of a class is created.\n\nYou usually use the constructor to initialize the object's attributes and state, perhaps with some parameters passed to it.\n\nConversely, the destructor is called when the object is destroyed.\n\nYou only need to explicitly define a destructor if you have cleanup code you want performed. Perhaps your instance needs to free up additional memory elsewhere, or you want to close an open file or something.\n\nExpansion of what humill_bca states: It is not required for a constructor to be public, and I don't believe should be one of its criteria. I don't know if its a language constraint of C++, but I code in Java, and we see private constructors all the time, espcially when implementing the Singleton Design pattern, or prior to Java 1.5, building your own enumerated type-safe classes, where we want to prevent the programmer from explicitely instantiating an instance of a class.
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Something like this maybe:\n\n Runtime.getRuntime().exec("C:" + pathSeparator +\n"jdk1.3.1" + pathSeparator + "bin" + pathSeparator + "javac.exe " + file);  } catch(Exception e)  { e.printStackTrace();  }  }  }
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for creating a connection object in weblogic..........and Accessing that object...........\n\nhttp://dev2dev.bea.com/pub/a/2004/02/WLS81JDBC.html
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You should try downloading Java...
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Phew given yourself a task here laddie....\nAnyhow go to www.wrox.com and they have a whole section dedicated to java,(and just about everything) be patient, be cool and you will get there\n\nGood luck
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using javascript.\n\nprovide an unique id for the button object.\n\nin js,\nwrite a func\n\nuse getElementById to get the object\nthen object.className = 'newCSSthatURUsing'
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Your question is a little general... anyway, here are some excellent links to Java constructor examples:\n\nhttp://sip.clarku.edu/tutorials/java/java.html#const\nhttp://www.site.uottawa.ca:4321/oose/index.html#Javaconstructor\nhttp://math.hws.edu/javanotes/c5/s2.html
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Memory Handling.\nWhatever memory space you occupy by instantiating the objects should be released after your use.\nType Casting should also be taken care.
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You can try it via an IDE......... but in the end that also uses the Java Virtual Machine to launch it ... You can't escape it as it is a core component of running Java
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import java.awt.*;\nimport javax.swing.*;\n//\n// A Simple Java Application that make use of the  Swing package\n//\npublic class Sample {\nprivate JFrame jF;\nprivate JPanel jP;\nprivate JButton jB;\n\npublic void go() {\njF = new JFrame("Sample");\njP = new JPanel();\njP.setBorder( BorderFactory.createEmptyBorder(30,30,30,30));\njP.setLayout(new GridLayout(0,1));\n\njB = new JButton("Click Here");\njB.setToolTipText("Please Click This Button");\n\njP.add(jB);\njF.setContentPane(jP);\n\njF.pack();\njF.setVisible(true);\n}\n\npublic static void main(String args[]) {\nSample s = new Sample();\ns.go();\n}\n}\n\n/* Save the file as Sample.java and compile. */\n/* Note the codes are for your reference only. Change it and run it to ensure you understand what each part is for. You will learn only by writing your own codes. */