I found this answered on the coin-dev mailing list: http://mail.openjdk.java.net/pipermail/coin-dev/2009-April/001503.html 5. Some failures of the close method can be safely ignored (e.g., closing a file that was open for read). Does the construct provide for this? No. While this functionality seems attractive, it is not clear that it’s worth the added complexity. As a practical … Read more
Use Pacifist from http://www.charlessoft.com/ to open and install the ‘JDK 7 Update X.pkg’ in the ‘jdk7-7uX-macosx-x64.dmg’ file you download from http://www.oracle.com/technetwork/java/javase/downloads/index.html
It looks like the language in section 5.5 Casting Conversion of Java 7 JLS was updated in comparison to the same section in the Java 5/6 JLS, probably to clarify the allowed conversions. Java 7 JLS says An expression of a reference type may undergo casting conversion to a primitive type without error, by unboxing … Read more
see my code example import java.awt.*; import java.util.Vector; import javax.swing.*; import javax.swing.UIManager; import javax.swing.plaf.ColorUIResource; import javax.swing.plaf.metal.MetalComboBoxButton; public class MyComboBox { private Vector<String> listSomeString = new Vector<String>(); private JComboBox someComboBox = new JComboBox(listSomeString); private JComboBox editableComboBox = new JComboBox(listSomeString); private JComboBox non_EditableComboBox = new JComboBox(listSomeString); private JFrame frame; public MyComboBox() { listSomeString.add(“-“); listSomeString.add(“Snowboarding”); listSomeString.add(“Rowing”); listSomeString.add(“Knitting”); listSomeString.add(“Speed … Read more
Background MD2 was widely recognized as insecure and thus disabled in Java in version JDK 6u17 (see release notes http://www.oracle.com/technetwork/java/javase/6u17-141447.html, “Disable MD2 in certificate chain validation”), as well as JDK 7, as per the configuration you pointed out in java.security. Verisign was using a Class 3 root certificate with the md2WithRSAEncryption signature algorithm (serial 70:ba:e4:1d:10:d9:29:34:b6:38:ca:7b:03:cc:ba:bf), … Read more
It seems that JDK7 process intern in a different way as before. I tested it with build 1.7.0-b147 and got “both are equal”, but when executing it (same bytecode) with 1,6.0_24 I do not get the message. It also depends where the String b2 =… line is located in the source code. The following code … Read more
This is how I got 1.7 to work with Eclipse. I hope it helps. I Downloaded the latest OpenJDK 1.7 universal (32/64 bits) JDK from Mac OS/X branch from http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html copied the jdk to /Library/Java/JavaVirtualMachines/ next to the default 1.6.0 one In Eclipse > Preferences > Java > Installed JREs you add a new one, … Read more
For a new project select the home directory of the jdk eg C:\Java\jdk1.7.0_99 or C:\Program Files\Java\jdk1.7.0_99 For an existing project. 1) You need to have a jdk installed on the system. for instance in C:\Java\jdk1.7.0_99 2) go to project structure under File menu ctrl+alt+shift+S 3) SDKs is located under Platform Settings. Select it. 4) click … Read more
I’ve been testing it out with a heavy application: 60-70GB allocated to heap, with 20-50GB in use at any time. With these sorts of applications, it’s an understatement to say that your mileage may vary. I’m running JDK 1.6_22 on Linux. The minor versions are important– before about 1.6_20, there were bugs in G1 that … Read more
Finding the most specific method is defined in a very formal way in the Java Language Specificaion (JLS). I have extracted below the main items that apply while trying to remove the formal formulae as much as possible. In summary the main items that apply to your questions are: JLS 15.12.2: your use case falls … Read more