de.frame4j

Class Exec

java.lang.Object

de.frame4j.Exec

@MinDoc(copyright="Copyright 2019  A. Weinert",
        author="Albrecht Weinert",
        version="V.42",
        lastModified="1.05.2021",
        usage="start as Java application (-? for help)",
        purpose="starts another java programme / frame4j tool given as 1st param")
public final class Exec
extends Object

Executing a Program.

This application runs the de.frame4j Java programme given as first parameter passing on the other parameters, if any, to that programme. If no parameter is given AskAlert will be run (with no parameters). Additionally de.frame4j.Exec replaces AskAlert as frame4j.jar's Main-Class (in the manifest).

The rationale behind is Java 11, i.e. all Java >=9, lacking the "installed extension" mechanism. Until Java 8 it

• made available all frame4j tools without further ado and
• was / is essential for many Java server applications.

The first point is partly overcome by Exec:
Instead of e.g.

 java de.frame4j.SVNkeys . -omitDirs CVS;doc-files;.svn 

or

 java -cp ....frame4j.jar de.frame4j.SVNkeys . -omitDirs CVS;doc-files;.svn

you may say

 java -jar ...frame4j.jar SVNkeys . -omitDirs CVS;doc-files;.svn

For comfort you may prepare two one line batch files

  @REM frame4j.bat
  @C:\util\jdk\bin\java.exe -jar C:\util\jdk\jre\lib\ext\frame4j.jar %*
 
  @REM frame4j11.bat
  @C:\util\jdk11\bin\java.exe -jar C:\util\jdk11\lib\frame4j.jar %*

to start a frame4j tool with Java8 or Java11 by, e.g.,.

 frame4j SVNkeys . -omitDirs CVS;doc-files;.svn

Note: A Java 8 compiled .jar may run under Java11 but not vice versa.

The list of Frame4J tools, helpers and demos startable by Exec is:
AskAlert, de.frame4j.AskAlert,
SVNkeys, de.frame4j.SVNkeys, SVNkeysFilter,
de.frame4j.SVNkeysFilter, ComplDemo, de.frame4j.demos.ComplDemo, TvH, de.frame4j.demos.TvH, de.frame4j.demos.HelloFrame4J,
de.frame4j.time.TimeHelper, de.frame4j.util.AppLangMap,
Del, de.frame4j.Del, Era, de.frame4j.Era, FS, de.frame4j.FS,
FuR, de.frame4j.FuR,
MakeDigest, de.frame4j.MakeDigest, PKextr, de.frame4j.PKextr, SendMail, de.frame4j.SendMail,
de.frame4j.io.ShowPorts, ShowProps, de.frame4j.ShowProps,
UCopy, de.frame4j.UCopy, Update, de.frame4j.Update,
XMLio, de.frame4j.XMLio, de.frame4j.net.ClientLil,
TestOnPi, TestOnPi.

de.frame4j.Exec accepts the fully qualified class name as well as the pure name as first parameter.
© Copyright 2018 Albrecht Weinert

See Also:

AskAlert

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args) The program.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

main

public static void main(String[] args)

The program.

Delegation to AskAlert.

Parameters:

args - tool + its command line parameter

See Also:

AskAlert.main(String[])