Moving to 64bit Java

Hi,
We are interested in moving to 64 bit java due to memory issues (HUGE data models)
We are in the process of investigating possible OS and hardware platforms.
Our preference is for 64bit Windows Vista and Intel Xeon based workstations from DELL.
Does anyone know if this is a problem with this OS and CPU combination ?
The 64 bit jdk download is specifically named ***amd64****
jdk-6u10-rc-bin-b28-windows-amd64-21_jul_2008.exe
Does this indicate that only the AMD family of 64 bit CPUs is supported and not the Intel Xeon ?
/Geir

It is called AMD64, because AMD was the first to implement a 64bit variant of the x86 platform, and therefor defined the 64 bit instruction set. Since then Intel has 'copied' (under agreement with AMD) this instruction set, and most Intel 64 bit processors use the same instruction set. It is still refered to as AMD64, while it x86-64 would be more correct nowadays. See also [http://en.wikipedia.org/wiki/AMD64]
So with an Intel Xeon you should have no problem running Java-AMD64
Edited by: TheAvalanche on 23-aug-2008 19:11

Similar Messages

Making moving eyes in java

i have been trying to make a java applet in which:
there is a circle as an eye (using the drawOval())
and then there is an eyeball (using the fillOval())
the eyeball is supposed to follow the movements of the mouse cursor...
and i m not able think of any idea to do that...
can anyone please give me an idea as to how to do this??

the code i posted earlier was opaque and unclear, so this time i post a clearer code
//moving eyeball
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class eyeball extends Applet implements MouseMotionListener
//(x1,y1)=mouse co-ordiantes
//(x,y)=eyeball co-ordianates
//(cx,cy)=eye-centre co-ordinates
//r=radius of eye
int x1,y1,x,y,cx,cy,r;
double m,k1,k2,k3,k4,k5,k6,k7,k8,pvx,pvy,pvx2,pvy2; //these are intermediate values to eventually get the values of (x,y)
                                                    //and are described below as and when required
public void init()
addMouseMotionListener(this);
public void mouseMoved(MouseEvent e)
x1=e.getX();
y1=e.getY();
cx=330;
cy=330;
r=30;
//"slope_numerator" is the numerator part in the formula of slope of the line
//(m=y2-y1/x2-x1) the line here is the line joining the centre of the cirle to
//the co-ordinates of the mouse
double slope_numerator=(y1-cy);
//"slope_dinominator" is the dinominator part in the formula of slope
//(m=y2-y1/x2-x1) the line here is the line joining the centre of the cirle to
//the co-ordinates of the mouse
double slope_dinominator=(x1-cx);
//slope of the line
m=slope_numerator/slope_dinominator;
//start of finding values of x
//from the equation y-y1=m(x-x1) we make y the subject of formula . i.e. y = mx - (mx1-y1)
//so here k1=mx1-y1
//so the equation of line is y=mx-k1
//product_m_and_x1 is the product of m*x1
double product_m_and_x1=m*x1;
//so ,k1 difference between product_m_and_x1 and y1
k1= product_m_and_x1-y1;
//from the equation of circle r^2=(cx-x)^2 +(cy-y)^2 (where r=radius and r^2 => (r squared and so on)
//now i substitute equation of line(y=mx-k1) in equation of circle
//r^2=(cx-x)^2 + (cy-(mx-k1))^2
//i group (k1+cy) together as k2 ie k2=k1+cy
//so the equation becomes
//r^2=(cx-x)^2+(k2-mx)^2..............................................................................(equation2)
k2=cy+k1;
//when the equation2 is expanded we get
//r^2=[(cx)^2 + (k2)^2]             -        x(2*cx+2*(k2)m)        +        x^2(1+m^2)...............................(equation3)
//taking k3=[(cx)^2+(k2)^2] ie.sum of cx_squared and k2_squared
//cx_squared is square of cx value
double cx_squared=cx*cx;
//k2_squared is square of k2 value
double k2_squared=k2*k2;
k3=cx_squared+k2_squared;
//from equation3(r^2=(cx)^2+(k2)^2-x(2*cx+2*(k2)m)+x^2(1+m^2))
//take k4=[2*(cx)+2*(k2)*m] ie.sum of 2 times cx and 2*m times k2
//cx_times_2 is 2*cx
double cx_times_2=2*cx;
//k2_times_2_times_m is 2*k2*m
double k2_times_2_times_m=2*k2*m;
//therefore calculating k4
k4=cx_times_2 + k2_times_2_times_m;
//from equation3(r^2=(cx)^2+(k2)^2-x(2*cx+2*(k2)m)+x^2(1+m^2))
//take k5=[1+m^2] ie sum of m_squared and 1
//first calculate m_squared as m*m
double m_squared=m*m;
//calculate k5=[1+m^2]
k5=1+m2_squared;
//so the equation3 is reduced to r^2=k3 - x(k4) + x^2(k5)
//bringing r^2 to Right Hand Side(RHS) ....
//0=[k3-r^2]    -     x(k4)      +      x^2(k5)...............................................................................(equation4)
//k6=[k3-r^2]
//Therefore the quadratic equation in x becomes
//x^2(k5) - x(k4) +k6 = 0.....................................................................................(equation5)
//first we calculated k6
//for that we need value of r_squared
//therefore we calculate r_squared = r*r
double r_squared=r*r;
//then we find k6=k3-r^2 in equation4
k6=k3-r2;
//we now solve the quadratic equation in x of the (equation5)
//for that we use the standard formula used to get the value of x in the equation
// (a)x^2+(b)x+c=0
//which is x= {-b (-+) squareroot of (b_squared - 4*a*c)}/(whole divided by 2*a)
//in (equation5):: a=k5, b=-k4 , c=k6
//first we find the value of the determinant ie. squareroot of (b_squared - 4*a*c)
//so since k4 is b here we find the value of k4_squared
double k4_squared=k4*k4;
//then we find the value of 4*a*c
//so since a=k5 and c=k6 we store the value of product into the variable k5k6
double k5k6=4*k5*k6;                 //(ok u guys were right the coding earlier was horrible. there was a mistake here)
//now we find the difference of b_squared and 4*a*c ie. k4_squared and k5k6
double discriminant_squared=k42-k5k6;
//then we find the discriminant_value by taking square root of discriminant_squared
discriminant_value=Math.sqrt(discriminant_squared);
//we then find the dinominator_value in the formula. ie. 2*a
//the value of a here is k4. so dinominator_value becomes 2*k4
dinominator_value=2*k4;
//then we calculate the value of => (-b - discriminant_value )
//here that would be difference between k4 and discriminant_value
double numerator_value1=k4-discriminant_value;
//then we find the first possible value of x (pvx)
//the first possible value of x(pvx) is numerator_value1/dinominator_value
//since, numerator_value1 represents [-b - squareroot of (b_squared - 4*a*c)]
pvx=numerator_value1/dinominator_value;
//then we calculate the value of => (-b + discriminant_value )
//here that would be sum of k4 and discriminant_value
double numerator_value2=k4+k7;
////then we find the second possible value of x (pvx2)
//the second possible value of x(pvx2) is numerator_value2/dinominator_value
//since, numerator_value2 represents [-b + squareroot of (b_squared - 4*a*c)]
pvx2=numerator_value2/dinominator_value;
//So the two possible x values are pvx,pvx2
//end of finding values of x
//start of finding values of y
//from the equation y-y1=m(x-x1) we made y the subject of formula . i.e. y = mx - (mx1-y1) or y=mx -k1
//now we have the value of x as pvx and pvx2 so now we can find values of y
//product_mx1 represents the product of mx in the equation y=mx-k1 when x is pvx
double product_mx1=m*pvx;
//product_mx2 represents the product of mx in the equation y=mx-k1 when x is pvx2
double product_mx2=m*pvx2;
//so now we can calculate the possible value of y(pvy and pvy2) corresponding to possible value of x(pvx and pvx2)
//so pvy is product_mx1 - k1 form the equation y=mx - k1
pvy=product_mx1-k1;
//similarly pvy2 is product_mx2 -k1 from the equation of line y=mx-k1
pvy2=product_mx2-k1;
//end of finding values of y
//but the values of (pvx,pvy) and (pvx2,pvy2) are in double , so convert them to int
//therefore
x=(int) pvx;
y=(int) pvy;
//so the co-ordinates of the eyeball should be (x,y)
//(x,y) is the point on the eye(circle) which satisfies the line joining the mouse pointer co-ordinates and centre of eye(circle)
//end of calculations
repaint();
//end of mouseMoved method
public void mouseDragged(MouseEvent e){}
public void paint(Graphics g)
//the eye
g.drawOval(300,300,60,60);
//the eyeball
g.fillOval(x,y,20,20);
//the line joining the centre of eye(circle) to the position of mousepointer
g.drawLine(330,330,x1,y1);
//calculated values for the sake of reference
g.drawString("x1,y1="+x1+"::::"+y1,50,50);                  //this shows current co-ordinates of mouse pointer
g.drawString("m="+m,50,65);                                 //this shows the slope(m) of the line y=mx-k1
g.drawString("k1="+k1,50,80);                               //this shows the value of k1
g.drawString("k2="+k2,50,95);                               //this shows the value of k2
g.drawString("k3="+k3,50,110);                              //this shows the value of k3
g.drawString("k4="+k4,50,125);                              //this shows the value of k4
g.drawString("k5="+k5,50,140);                              //this shows the value of k5
g.drawString("k6="+k6,50,155);                              //this shows the value of k6
g.drawString("k7="+k7,50,170);                              //this shows the value of k7
g.drawString("k8="+k8,50,185);                              //this shows the value of k8
g.drawString("pvx,pvy="+pvx+"::::"+pvy,50,200);             //this shows current co-ordinates (pvx,pvy)
g.drawString("pvx2,pvy2="+pvx2+"::::"+pvy2,50,220);         //this shows current co-ordinates (pvx2,pvy2)
g.drawString("x,y="+x+"::::"+y,50,240);                     //this shows current co-ordinates of the eye-ball(fillOval)
//end of paint method
//end of applet
/*<applet code="eyeball" height=800 width=600></applet>*/

Java 6 Update 12 64bit Java Webstart documentation

I notice that 64bit 6 Update 12 comes with 64bit version of Java Webstart - I am just wondering whether there are any documentation on how 64bit Java Webstart works? For example:
1) By default it will use the 64bit JRE to launch an application. What if an JNLP embedded some 32bit JNI DLLs that requires the use of 32bit JRE?
2) How can an app specify larger heap if it runs on 64bit host, but less on a 32bit host?
3) Is there any new extensions to JNLP to support 64bit Java?
Thanks.

1.) The initial release of the 64 bit version of javaws will work only with 64 bit JRe's. There is no support yet for mixing.
2.) You can specify different dlls for use with 64 bit and 32 architectures just as you can with operating systems as follows:
<resources>
<java version="1.6+"/>
<jar href="myapp.jar" main="true"/>
<resources os="Windows" arch="i586">
<nativelib href="mydll32.jar"/>
</resources>
<resources os="Windows" arch="amd64">
<nativelib href="mydll64.jar"/>
</resources>
</resources>
3.) There are no new JNLP extensions.
/Andy

How to install 64bit java version

Dear All,
I need config jvm memory greater than 2G because "Account Analyst Report" issue.
If I must need to install JAVA version 64bit, how can I do it?
Platform is: Oracle Solaris on SPARC (64-bit)
Current Java version is:
java -version
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Server VM (build 17.0-b16, mixed mode)
Please Help!!
Thanks,
Jackie

Hey, Guys,
Thanks for your information.
Customer's information:
EBS version: 12.1.3
Platform: Oracle Solaris on SPARC (64-bit)
The instance was fine, after run pre-clone scripts, then OPP service can not start up.
I tried these notes and doesn't work.
At first, customer's error message is:
"Invalid maximum heap size: -Xmx5120m
The specified size exceeds the maximum representable size.
Could not create the Java virtual machine."
Then, I let customer set to 2G, 3G and 4G. Also doesn't help.
I checked customer's context file:
See following information:
<oafm_jvm_start_options oa_var="s_oafm_jvm_start_options">-server -verbose:gc -Xmx256M -Xms64M -XX:MaxPermSize=128M -XX:NewRatio=2 -XX:+PrintGCTimeStamps -XX:+UseTLAB -XX:+UseParallelGC -XX:ParallelGCThreads=2 -Djava.security.policy=$ORACLE_HOME/j2ee/oacore/config/java2.policy -Djava.awt.headless=true -Dhttp.webdir.enable=false -Doracle.security.jazn.config=/AP/crp2/inst/apps/CRP2_m4000/ora/10.1.3/j2ee/oafm/config/jazn.xml</oafm_jvm_start_options>
<oafm_jvm_stop_options oa_var="s_oafm_jvm_stop_options">-server -verbose:gc -Xmx256M -Xms64M -XX:MaxPermSize=128M -XX:NewRatio=2 -XX:+PrintGCTimeStamps -XX:+UseTLAB -XX:+UseParallelGC -XX:ParallelGCThreads=2 -Djava.security.policy=$ORACLE_HOME/j2ee/oacore/config/java2.policy -Djava.awt.headless=true -Dhttp.webdir.enable=false</oafm_jvm_stop_options>
The max is 256M, min is 64M, then I let customer to increase the value, run autoconfig, but also doesn't help.
Another engineer said customer should install 64bit java version on 64bit platform. His comments is:
Please check the java version.
The 32bit Java version can only address 2GB memory which in reality is 1500M for VM Heap Space.
If customer needs more than 1500M VM Heap space, then they need to install the 64bit Java version.
And customer run command:
java -versionoutput is:
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Server VM (build 17.0-b16, mixed mode)
Then engineer provide solution:
update FND_CP_SERVICES
set DEVELOPER_PARAMETERS = 'J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx1024m'
where SERVICE_ID = (select MANAGER_TYPE from FND_CONCURRENT_QUEUES
where CONCURRENT_QUEUE_NAME = 'FNDCPOPP');
and commit.
But customer need config jvm memory greater than 2G because "Account Analyst Report" issue.
If I must need to install JVM 64bit, how can I do it?
Our EBS version is 12.1.3
That's the whole process.
Please HELP!!!
Thanks,
Jackie

64Bit Java + Minecraft

So i just downloaded Minecrat 1.0.0 and when i was in settings it said it would work better if i had 64bit Java and that currently im running 32bit, i was hoping someone could suggest how i am meant to get 64bit as when i go to the Java site it just suggests that i use to Software Update option under the apple menu but when i do this nothing is showing up.
I know its no nessisery to have 64bit Java but i would have through that with me having a system that can run both 32bit and 64bit i would have had 64bit by default.
Thank you.

Oh my mistake i didn't realize i was posting in10.6.6.....im actually using 10.6.8.
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JDeveloper 11g and 64bit Java

Hi everyone.
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Then I tried to use my 64bit JDK version 1.6.0.10 and after a little bit of tampering with the installation directories I was able to do that too.
All it took was to link the $JDEV_HOME/jdk160_05 directory to the location of the actual JDK installation.
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Thanassis

Hi,
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Invoking loadjava on connection 'HR_CapRock_DEV' with arguments:
-order -resolve -thin
errors : class package1/mypackage/JavaStoredProc
ORA-29521: referenced name java/lang/StringBuilder could not be found
The following operations failed
class package1/mypackage/JavaStoredProc: resolution
oracle.aurora.server.tools.loadjava.ToolsException: Failures occurred during processing
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     at oracle.jdeveloper.deploy.tools.OracleLoadjava.deploy(OracleLoadjava.java:116)
     at oracle.jdeveloper.deploy.tools.OracleLoadjava.deploy(OracleLoadjava.java:46)
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     at oracle.jdevimpl.deploy.StoredProcProfileDt$Action$1.run(StoredProcProfileDt.java:383)
#### Deployment incomplete. #### Jun 18, 2007 10:17:31 AM
*** Note ***
One possibility for the deployment failure is that the target Database may not support JDK version 1.5. Updating your Project Properties compiler Source & Target to an earlier release could fix this problem.
How can I either downgrade JDK on the compiler(JDeveloper) to be 1.4 or, How can I resolve the error,
ORA-29521: referenced name java/lang/StringBuilder could not be found
Thanks,
Sujith

64bit, java web start, media framework, applets avi mov e.s.o.

Using 64bit, (SuseLinux), nothing works i.e. webbrowsers (firefox),
java web start, media framework, applets, avi, mov, e.s.o.
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(note: firefox doing stupid thing when try to download plugin)
Is it possible to write some kind of HTML-code to download an
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Works just fine for me, too even though the "instructions" do not mention any Mac OS or browser.
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Anyone running processing (http://processing.org) on a 64bit machine?
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The file does exist, and it's executable, the processing forums have been a bit quiet lately.
Thanks

carlosgottberg wrote:Looking at /usr/bin/processing found out that you have to symlink /usr/bin/java to /usr/share/processing/java/bin/java .
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Problem with installing both 32 and 64bit Java7u45

Hi all.
For some reson we need to install Java7u45 because of an inhouse made application only runs on java7u45 32bit,
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So is there anyway to change the default 64bit java to 32bit and make it stick?
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panosk wrote:
uwinkelvos wrote:This isn't GWT, is it?
Hi, is there anybody using Eclipse and GWT in arch 64?
I use Eclipse Galileo 64 bit and trying to use GWT I get the error "...wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)..."
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How to add a new library to an existing java project

Hi ,
i just moved to writing java applications in jedit after working in eclipse for a while , in eclipse it was easy to add a new library jusr rightclick and add but how do i do the same when working with a text editor of jedit style and what do i need to change in order of javac.exe and java.exe to work properly , i tried google but i got no comprehensive article about it i'd appreciate a link or even better a simple explanation .
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you just need to include it on your classpath

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Hello,
I am fairly new the Java Concurrent Programs concept. I was just trying a simple Hello World example but I cannot seem to run it from the operating system. Here is my Hello World java program I created using Jdeveloper:
package oracle.apps.fnd.cp.request;
public class Hello implements JavaConcurrentProgram {
public static final String RCS_ID = "$Header$";
public void runProgram(CpContext ctx) {
ctx.getLogFile().writeln("-- Hello World! --", 0);
ctx.getOutFile().writeln("-- Hello World! --");
ctx.getReqCompletion().setCompletion(ReqCompletion.NORMAL, "");
It compiles fine in Jdev generating the class file. Here is what I did :
1) Created directory under $JAVA_TOP as follows :
mkdir $JAVA_TOP/oracle/apps/fnd/cp/sample
2) moved the Hello.java file there under sample directory
3) compiled java file using avac $JAVA_TOP/oracle/apps/fnd/cp/sample/Hello.java ( It compiles fine generating the class file )
4) Now I wanted to test running it : I tried using jre command first as I saw in other posts but this is not working :
jre -Ddbcfile=$FND_TOP/secure/k021kp-6180_r115dev1.dbc -Drequest.outfile=/export/home/sqadri/outfile oracle.apps.fnd.cp.request.Run oracle.apps.fnd.cp.sample.Hello
Error :
ksh: jre: not found
Then I tried using the other way I saw on posts which is using the java command :
java -cp $AF_CLASSPATH -Ddbcfile=$FND_TOP/secure/k021kp-6180_r115dev1.dbc -Drequest.outfile=/export/home/sqadri/outfile oracle.apps.fnd.cp.request.Run oracle.apps.fnd.cp.sample.Hello
This gives me the following error :
java.lang.NoClassDefFoundError: oracle/apps/fnd/cp/sample/Hello (wrong name: oracle/apps/fnd/cp/request/Hello)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at oracle.apps.fnd.cp.request.Run.main(Run.java:157)
Can anyone tell me what I am doing wrong ? I have tried everything even tried ftp the class file from my local but I get the same error. Any help would be appreciated.
Thanks

Ajay,
Yes you are right. I did not register my java program yet in the concurrent programs.
I thought I could test it out from the operating system command line before registering it. But looking at your document you sent me it seems I have to do all the steps i.e. define concurrent program etc before I can test it from the operating system. If that's the case then what's the use of trying to test it via operating system using
java -cp $AF_CLASSPATH -Ddbcfile=$FND_TOP/secure/k021kp-6180_r115dev1.dbc -Drequest.outfile=/export/home/sqadri/outfile oracle.apps.fnd.cp.request.Run oracle.apps.fnd.cp.sample.Hello
Thanks
Syed

Can you tell me if I have a 64 bit operating system which Java update do I download

Please can anyone advise me on what Java update I download for a Windows 7 64 bit operating system. My Firefox is telling me I need to urgently update my Java but when I click through to update all that is there is a page of confusing information about 32 bit and 64 bit systems. It asks which version am I using 64 bit version of Firefox or 32 bit. I didn't know there were two, I thought when referring to 64 bit and 32 bit it meant the operating system of my computer. Can anyone clear this up for me. Thank you.

Of course, if you have a x64 bit system, its better to download a x64 bit Java version. However, i think Firefox won't be able to use it since Firefox isn't x64 bit (yet). So if you need Java in your browser, you'll need Java's 32bit version.
Keep in mind i could be wrong. It's just my guessing because i tried it out some months ago. I installed 64bit Java but Firefox couldn't handle it.
However in my opinion you won't recognize a difference between 32 and 64 bit, unless you play games in Java or do other resource intensive work. 32bit will always work on a 64bit PC, but not the other way around.

64bit weblogic server installation on windows

Hi,
We are trying to install 64bit Oracle weblogic Server 10.3.2 on windows 2007 Server. As per the documentation, The installation requires 64bit java installation and then execute the wl_1032_server.jar file.
We installed weblogic Server successfully and did not find any errors while installing the weblogic server. We created one Managed Server with the default options. We are able to start the Admin Server with out any problems.
But we are unable to start the managed weblogic server and we are getting the following error message while starting the managed webserver.
I have also tried with setting the following memory args also. But I am getting the same error in the managedserver log files.
set MEM_ARGS=-Xms512m -Mmx1024m -MaxPermSize=512m
<Feb 19, 2010 11:57:01 PM EST> <Notice> <WebLogicServer> <BEA-000330> <Started WebLogic Managed Server "new_ManagedServer_1" for domain "base_domain" running in Production Mode>
Exception in thread "[STANDBY] ExecuteThread: '2' for queue: 'weblogic.kernel.Default (self-tuning)'" java.lang.OutOfMemoryError: PermGen space
The WebLogic Server encountered a critical failure
Reason: PermGen space
Exception in thread "main" java.lang.OutOfMemoryError: PermGen space
<Feb 19, 2010 11:57:10 PM> <FINEST> <NodeManager> <Waiting for the process to die: 1848>
Can you please help us in configuring the 64bit weblogic server. Do we need to make any special configurations.
Thanks and Regards,
S R Prasad

Thanks,
You are right and I've found a documentation below. Did you checked your Environment Variables or try to use full path of 64 bit Java installation?
How do I select between 32 and 64-bit operation? What's the default? The options -d32 and -d64 have been added to the Java launcher to specify whether the program is to be run in a 32 or 64-bit environment. On Solaris these correspond to the ILP32 and LP64 data models, respectively. Since Solaris has both a 32 and 64-bit J2SE implementation contained within the same installation of Java, you can specify either version. If neither -d32 nor -d64 is specified, the default is to run in a 32-bit environment.
Other Java commands (javac, javadoc, etc.) will rarely need to be executed in a 64-bit environment. However, the -d32/-d64 options may be passed to these commands and then on to the Java launcher using the established -J prefix option (eg: -J-d64).
All other platforms (Windows and Linux) contain separate 32 and 64-bit installation packages. If both packages are installed on a system, you select one or the other by adding the appropriate "bin" directory to your path. For consistency, the Java implementations on Linux accept the -d64 option.
Regards,
Kadir

Cannot open ddms.bat on android sdk because Java is not in my path

I'm trying to open the ddms.bat (Dalvik Debug Monitor) but it won't let me because Java is not in my path.
Some things you should know: 1. I barely know what I'm talking about so please walk me through any advice you give me, I'm brand new to all of this. 2. I'm only trying to get ddms.bat to open because I want to take android screenshots without rooting my Nexus One. 3. I'm using a laptop PC with Windows 7 64 bit. 4. Following directions from some site, I moved the entire Java file from C:\Program Files to C:\Program Files (x86)
I've downloaded jre, jdk, and eclipse. For some reason eclipse wont open, its giving me some error about could not open C:\Program Files\Java\jre\lib\amd64\jvm.cfg
Using a website that I googled, I was able to put C:\Program Files (x86)\Java\jre1.6.0_21\jre\bin into the PATH but I don't know if I did the user variable correctly because the website told me to enter "classpath" as the variable and "." as the value.
Main Questions:
1. How do I put Java in my path?
2. How can I get the Eclipse application to open?
3. Should I move Java back to C:\Progam Files rather than keeping it C:\Progam Files (x86)
4. In order to get ddms.bat to open do I need jre, jdk, and eclipse or can I do with only one or two of them? And if so which ones do I need?
EDIT: I've moved the Java folder back to C:\Program Files and then tried to open ddms.bat and now cmd is giving the error that java.lang.UnsatisfiedError: Cannot load 32-bit SWT libraries on 64 bit JVM
What does that mean, and how can I fix it?
Also I've managed to get eclipse to open.
EDIT2: Got it to work somehow, that was really complicated but I'm just happy I got it. Heres the imgur link : imgur.com/ucBpY.png
Edited by: TaeKwonDonkey on Jul 30, 2010 9:04 PM
Edited by: TaeKwonDonkey on Jul 30, 2010 9:42 PM
Edited by: TaeKwonDonkey on Jul 30, 2010 9:43 PM

TaeKwonDonkey wrote:
I'm trying to open the ddms.bat (Dalvik Debug Monitor) but it won't let me because Java is not in my path.
Some things you should know: 1. I barely know what I'm talking about so please walk me through any advice you give me, I'm brand new to all of this.You might want to try familiarizing yourself with basic Java before using it to run a debugger of Java (or near-Java) code. Multiple layers of roughly the same thing can be hard to grok.
4. Following directions from some site, I moved the entire Java file from C:\Program Files to C:\Program Files (x86)What do you mean by that? "entire Java file" doesn't really make sense.
I've downloaded jre, jdk, and eclipse. For some reason eclipse wont open, its giving me some error about could not open C:\Program Files\Java\jre\lib\amd64\jvm.cfgWell if it's looking for Java under that path, but you moved it to a different directory, that means it won't be able to find Java.
Using a website that I googled, I was able to put C:\Program Files (x86)\Java\jre1.6.0_21\jre\bin into the PATH but I don't know if I did the user variable correctly because the website told me to enter "classpath" as the variable and "." as the value. CLASSPATH and PATH are two entirely different things.
Main Questions:
1. How do I put Java in my path?You choose a sane standard place to put it there. Set the PATH environment variable to point to the bin/ subdirectory under your Java directory.
2. How can I get the Eclipse application to open?Don't even use Eclipse yet. It's just adding more layers, and that makes each layer harder to learn.
Also, I've come to feel that Eclipse is usually more trouble than it's worth.
3. Should I move Java back to C:\Progam Files rather than keeping it C:\Progam Files (x86)Probably. Why did you do that?
4. In order to get ddms.bat to open do I need jre, jdk, and eclipse or can I do with only one or two of them? And if so which ones do I need?You probably just need the JRE (unless ddms.bat compiles things for some reason) but if you're planning to do any Java programming, you might as well install the JDK (it includes the JRE too).
EDIT2: Got it to work somehow, that was really complicated but I'm just happy I got it. Heres the imgur link : imgur.com/ucBpY.pngRegardless, I advise you to skip Eclipse. You want to learn how this thing works, not how to click on things.

SLF4J instead of Java Util Logging?

Hi BDBJE team,
Is it included on the BDBJE roadmap a migration from "Java Util Logging" to a most flexible framework like SLF4J?
BR,
/César.

Hi Cesar,
No, definitely not on the road map, but we are aware of the shortcomings of standard Java logging (as documented on this forum) and we will think about what to do about it. It's a little disappointing, given that we just finished moving to standard Java logging (from our own custom logging) in the last release.
--mark

Moving to 64bit Java

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