diff --git a/binary/build_jar.bat b/binary/build_jar.bat
index 16e22af5..63d44bbe 100755
--- a/binary/build_jar.bat
+++ b/binary/build_jar.bat
@@ -1,5 +1,5 @@
 @echo off
-echo Requirement: jar javac
+echo Requirement: jdk1.8 jar javac
 
 set JAR=jar
 set JAVAC=javac
diff --git a/binary/build_jar.sh b/binary/build_jar.sh
index 9e324a43..4f0f3a3a 100755
--- a/binary/build_jar.sh
+++ b/binary/build_jar.sh
@@ -1,13 +1,17 @@
 
-echo "Requirement: jar javac "
+echo "Requirement: jdk1.8 jar javac "
+
+JAVAC=javac
+JAR=jar
+
 
 function build_jar(){
     rm -rf $3/$1
     mkdir classes 
     find $2/java -name "*.java" >source.txt
-    javac -cp lib/*:libex/* -encoding "utf-8" -d classes @source.txt
+    ${JAVAC} -cp lib/*:libex/* -encoding "utf-8" -d classes @source.txt
     cp -R $2/resource/* classes/
-    jar cf $1 -C classes ./
+    ${JAR} cf $1 -C classes ./
     rm -rf source.txt
     rm -rf classes
     mv $1 $3/
diff --git a/mobile/build_jar.bat b/mobile/build_jar.bat
new file mode 100755
index 00000000..e995453c
--- /dev/null
+++ b/mobile/build_jar.bat
@@ -0,0 +1,34 @@
+@echo off
+echo Requirement: jdk1.8 jar javac
+
+set JAR=jar
+set JAVAC=javac
+
+mkdir assets
+mkdir assets\resfiles
+
+echo build assets\resfiles\minijvm_rt.jar
+call :build_jar minijvm_rt.jar ..\minijvm\java\src\main assets\resfiles
+
+echo build assets\resfiles\glfw_gui.jar
+call :build_jar glfm_gui.jar .\java\glfm_gui\src\main assets\resfiles
+
+echo build assets\resfiles\minijvm_test.jar
+call :build_jar ExApp.jar .\java\ExApp\src\main assets\resfiles
+
+echo completed.
+pause
+goto :eof 
+
+
+:build_jar
+    del /Q/S/F %3\%1
+    md classes 
+    dir /S /B %2\java\*.java > source.txt
+    %JAVAC% -cp assets\resfiles\*.jar -encoding "utf-8"   -d classes @source.txt
+    xcopy /E %2\resource\* classes\
+    %JAR% cf %1 -C classes .\
+    del /Q/S source.txt
+    rd /Q/S classes\
+    move /Y %1 %3\
+goto :eof
\ No newline at end of file
diff --git a/mobile/build_jar.sh b/mobile/build_jar.sh
new file mode 100755
index 00000000..9142278e
--- /dev/null
+++ b/mobile/build_jar.sh
@@ -0,0 +1,31 @@
+
+echo "Requirement: jdk1.8 jar javac "
+
+JAVAC=javac
+JAR=jar
+
+function build_jar(){
+    rm -rf $3/$1
+    mkdir classes 
+    find $2/java -name "*.java" >source.txt
+    ${JAVAC} -cp assets/resfiles/*.jar -encoding "utf-8" -d classes @source.txt
+    cp -R $2/resource/* classes/
+    ${JAR} cf $1 -C classes ./
+    rm -rf source.txt
+    rm -rf classes
+    mv $1 $3/
+}
+
+mkdir lib
+mkdir libex
+
+echo "build assets/resfiles/minijvm_rt.jar"
+$(build_jar minijvm_rt.jar ../minijvm/java/src/main assets/resfiles)
+
+echo "build assets/resfiles/glfm_gui.jar"
+$(build_jar glfm_gui.jar ./java/glfm_gui/src/main assets/resfiles)
+
+echo "build assets/resfiles/ExApp.jar"
+$(build_jar ExApp.jar ./java/ExApp/src/main assets/resfiles)
+
+echo "completed"