Java----> Manually compile Java projects

Environment:

jdk1.8,cmd,notepad++

To create a Java project test, create a folder:

Src

Classes

Lib

Description

src placement. java files

Classes placing the. class file

Lib-dependent jar packages required for project placement

Open CMD,CD to test,

Javac

1 javac-d. \classes-classpath. \lib\x1.jar;. \lib\x2.jar, ... \src\*.java

Description

-D. \classes specifies that the compiled classes file is placed in the current folder classes

. \src\*.java all Java files in the current folder

-classpath. \lib\x1.jar;x2.jar; Specifies the location of the dependent jar package, separated by semicolons (;). Separated by a colon (:) under Linux

Java

1 java-classpath. \classes;. \lib\x1.jar;. \lib\x2.jar; mainclassname

Description

-classpath. \classes;. \lib\x1.jar;x2.jar; Specify the location of the class file that you want to participate in running (including the dependent Jar package)

Mainclassname specifying the fully qualified name of the main class

Jar

CD to Classes folder,

1 jar-cvf Xx.jar. \*

After generating Xx.jar, open with compression software, modify the Manifest.mf file in the Meta-inf folder

Add two properties:

Main-class and Class-path

MAIN-CLASS Specifies the program's entry class, which is the class where the main function resides

CLASS-PATH specifies where the program relies on the jar package, with multiple jar spaces separated

Note the last line of the MANIFEST.MF file is empty. Otherwise, it will report java.lang.NoClassDefFoundError and other errors, which is equivalent to not searching the specified jar package.

1 manifest-version:1.0 2 created-by:1.8.0_172 (Oracle Corporation) 3 Main-class: The fully qualified name of the main class 4 Class-path:. /lib/xxx1.jar. /lib/xxx2.jar

Run the jar package

1 Java-jar Xx.jar

Take an example of MyBatis's automatic generation of SQL map for an experiment:

1 javac-d. \classes-classpath. \lib\mybatis-3.2.3.jar;. \lib\mybatis-generator-core-1.3.2.jar;. \lib\mysql-connector-java-5.1.28-bin.jar;. \lib\log4j-1.2.16.jar. \src\*.java

1 java-classpath. \classes;. \lib\mybatis-3.2.3.jar;. \lib\mybatis-generator-core-1.3.2.jar;. \lib\mysql-connector-java-5.1.28-bin.jar;. \lib\log4j-1.2.16.jar Generatorsqlmap

Operating Procedures and results:

Jar

Execution process and Results

Note

You must first create the SRC folder, otherwise you will not see the results.

If the targetproject attribute can be configured to No, then the SRC folder will be created automatically.

Reference article:

73881568

5009436

7786526

Https://www.cnblogs.com/xiazdong/p/3216220.html

Java----> Manually compile Java projects