java-7

Using Oracle(Sun) JDK6 and trying to move to Oracle JDK7 I am using sun.awt.GraphicsEnvironment to find all system fonts in order to use them to change pdf font used in my pdf file. Here is the exact code I am using: GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment(); // get all system fonts final Font[] fonts = gEnv.getAllFonts(); After that I will need to get the exact font file path on the system, so I use: FontManager.getFontPath(true) + "/" + FontManager.getFileNameForFontName(font_name); The problem now is that sun.font.FontManager is no longer a class and has

Does using the this keyword affect Java performance at all? In this example: class Prog { private int foo; Prog(int foo) { this.foo = foo; } } Is there performance overhead doing that over the following?: class Prog { private int foo; Prog(int bar) { foo = bar; } } A couple of coworkers and I were discussing this earlier today and no one could come up with an answer the we all agreed on. Any definitive answer? No, not at all. It is just a different syntax for the same thing. It gets compiled into exactly the same piece of bytecode. So say it like a human: you are telling the compiler twice

Related to this question: Is The Java Tutorials Translucent Window example giving trouble to those playing with jdk7? with jdk1.6.0_26 I seem to be able to apply translucency to a JFrame, but not so with jre7: NativeException: java.awt.IllegalComponentStateException: The frame is decorated ex (jruby scripting java, works jdk1.6 not with jdk7 though): require 'java' class MouseDraw def self.go java_import 'javax.swing.JFrame' java_import 'com.sun.awt.AWTUtilities' f = JFrame.new AWTUtilities.set_window_opacity(f, 0.5) f.set_size 200,200 f.show end end MouseDraw.go So my question is "is it

Android SDK requirements state that either JDK 5 or JDK 6 is required. However, I have a Java class library written in Java 7 and I would like to use it for my Android project. Instead of manually converting Java 7 to Java 6 by hand, I was wondering if anyone know of a converter that could do this job for me? Or do we have to code one up from scratch? Do you have the source for the JAR? If so, you can use the javac -target parameter set to either 5 or 6 to generate either Java 5 or 6 class files. See this page . 来源： https://stackoverflow.com/questions/8869869/is-there-a-java-7-to-java-6

I'm trying to use IntelliJ (on Mac OS X) to compile some code I wrote using Eclipse. I've attempted to run the following code: switch (category) { case "below 20": below20++; break; case "20 to 29": to30++; break; case "30 to 39": to40++; break; case "40 to 49": to50++; break; case "50 to 59": to60++; break; case "60 to 69": to70++; break; case "70 t0 79": to80++; break; case "80 to 89": to90++; break; case "90 to 99": above90++; break; default: break; } However, I get the error: java: strings in switch are not supported in -source 1.6 (use -source 7 or higher to enable strings in switch) I

Hi I am running a maven test using maven 3.0.3 with hibernate 4.0.0 Final release and spring 3.1 on jdk7 update 2. I get the following error. Caused by: java.lang.VerifyError: Expecting a stackmap frame at branch target 63 in method ${myDomainClass}.equals(Ljava/lang/Object;)Z at offset 24 at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2442) at java.lang.Class.getDeclaredMethods(Class.java:1808) at org.hibernate.property.BasicPropertyAccessor.getterMethod(BasicPropertyAccessor.java:352) at org.hibernate.property