Merge pull request #2039 from devinbileck/install_java.bat

Add script for easy installation and configuration of the necessary JDK on Windows

docs/build.md

@@ -1,6 +1,6 @@
 # Building Bisq
 
-_You will need [OpenJDK 10](https://jdk.java.net/10/) installed and set up as the default system JDK to complete the following instructions._
+_You will need [OpenJDK 10](https://jdk.java.net/10/) installed and configured as the default system JDK to complete the following instructions. See the `scripts` directory for scripts that can be used to install and configure the JDK automatically._
 
 
 ## Clone

scripts/install_java.bat

@@ -0,0 +1,54 @@
+@echo off
+
+::Ensure we have administrative privileges in order to install files and set environment variables
+>nul 2>&1 "%SYSTEMROOT%\system32\cacls.exe" "%SYSTEMROOT%\system32\config\system"
+if '%errorlevel%' == '0' (
+    ::If no error is encountered, we have administrative privileges
+    goto GotAdminPrivileges
+)
+echo Requesting administrative privileges...
+echo Set UAC = CreateObject^("Shell.Application"^) > "%temp%\getadminprivileges.vbs"
+set params = %*:"=""
+echo UAC.ShellExecute "%~s0", "%params%", "", "runas", 1 >> "%temp%\getadminprivileges.vbs"
+"%temp%\getadminprivileges.vbs"
+exit /B
+:GotAdminPrivileges
+if exist "%temp%\getadminprivileges.vbs" ( del "%temp%\getadminprivileges.vbs" )
+pushd "%CD%"
+cd /D "%~dp0"
+
+title Install Java
+
+set jdk_version=10.0.2
+set jdk_filename=openjdk-%jdk_version%_windows-x64_bin
+set jdk_url=https://download.java.net/java/GA/jdk10/%jdk_version%/19aef61b38124481863b1413dce1855f/13/%jdk_filename%.tar.gz
+
+echo Downloading required files
+powershell -Command "Invoke-WebRequest %jdk_url% -OutFile $env:temp\%jdk_filename%.tar.gz"
+::Download 7zip (command line version) in order to extract the tar.gz file since there is no native support in Windows
+powershell -Command "Invoke-WebRequest https://www.7-zip.org/a/7za920.zip -OutFile $env:temp\7za920.zip"
+powershell -Command "Expand-Archive $env:temp\7za920.zip -DestinationPath $env:temp\7za920 -Force"
+
+echo Extracting and installing JDK
+"%TEMP%\7za920\7za.exe" x "%TEMP%\%jdk_filename%.tar.gz" -o"%TEMP%" -r -y
+"%TEMP%\7za920\7za.exe" x "%TEMP%\%jdk_filename%.tar" -o"%TEMP%\openjdk-%jdk_version%" -r -y
+if exist "%PROGRAMFILES%\Java\openjdk\jdk-%jdk_version%" (
+    rmdir /S /Q "%PROGRAMFILES%\Java\openjdk\jdk-%jdk_version%"
+) else (
+    md "%PROGRAMFILES%\Java\openjdk"
+)
+move "%TEMP%\openjdk-%jdk_version%\jdk-%jdk_version%" "%PROGRAMFILES%\Java\openjdk"
+
+echo Setting environment variables
+setx /M JAVA_HOME "%PROGRAMFILES%\Java\openjdk\jdk-%jdk_version%"
+set java_bin=%%JAVA_HOME%%\bin
+echo %PATH%|find /i "%java_bin%">nul  || setx /M PATH "%PATH%;%java_bin%"
+
+echo Removing downloaded files
+rmdir /S /Q %TEMP%\7za920
+del /Q %TEMP%\7za920.zip
+rmdir /S /Q %TEMP%\openjdk-%jdk_version%
+del /Q %TEMP%\%jdk_filename%.tar
+del /Q %TEMP%\%jdk_filename%.tar.gz
+
+pause