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Diffstat (limited to 'Examples/java/variables/runme.java')
-rw-r--r-- | Examples/java/variables/runme.java | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Examples/java/variables/runme.java b/Examples/java/variables/runme.java new file mode 100644 index 0000000..361a30f --- /dev/null +++ b/Examples/java/variables/runme.java @@ -0,0 +1,97 @@ +// This example illustrates global variable access from Java. + +import java.lang.reflect.*; + +public class runme { + static { + try { + System.loadLibrary("example"); + } catch (UnsatisfiedLinkError e) { + System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e); + System.exit(1); + } + } + + public static void main(String argv[]) { + +// Try to set the values of some global variables + + example.setIvar(42); + example.setSvar((short)-31000); + example.setLvar(65537); + example.setUivar(123456); + example.setUsvar(61000); + example.setUlvar(654321); + example.setScvar((byte)-13); + example.setUcvar((short)251); + example.setCvar('S'); + example.setFvar((float)3.14159); + example.setDvar(2.1828); + example.setStrvar("Hello World"); + example.setIptrvar(example.new_int(37)); + example.setPtptr(example.new_Point(37,42)); + example.setName("Bill"); + + // Now print out the values of the variables + + System.out.println( "Variables (values printed from Java)" ); + + System.out.println( "ivar =" + example.getIvar() ); + System.out.println( "svar =" + example.getSvar() ); + System.out.println( "lvar =" + example.getLvar() ); + System.out.println( "uivar =" + example.getUivar() ); + System.out.println( "usvar =" + example.getUsvar() ); + System.out.println( "ulvar =" + example.getUlvar() ); + System.out.println( "scvar =" + example.getScvar() ); + System.out.println( "ucvar =" + example.getUcvar() ); + System.out.println( "fvar =" + example.getFvar() ); + System.out.println( "dvar =" + example.getDvar() ); + System.out.println( "cvar =" + (char)example.getCvar() ); + System.out.println( "strvar =" + example.getStrvar() ); + System.out.println( "cstrvar =" + example.getCstrvar() ); + System.out.println( "iptrvar =" + Long.toHexString(SWIGTYPE_p_int.getCPtr(example.getIptrvar())) ); + System.out.println( "name =" + example.getName() ); + System.out.println( "ptptr =" + Long.toHexString(SWIGTYPE_p_Point.getCPtr(example.getPtptr())) + example.Point_print(example.getPtptr()) ); + System.out.println( "pt =" + Long.toHexString(SWIGTYPE_p_Point.getCPtr(example.getPt())) + example.Point_print(example.getPt()) ); + + System.out.println( "\nVariables (values printed from C)" ); + + example.print_vars(); + + System.out.println( "\nNow I'm going to try and modify some read only variables" ); + + System.out.println( " Trying to set 'path'" ); + try { + Method m = example.class.getDeclaredMethod("setPath", new Class[] {String.class}); + m.invoke(example.class, new Object[] {"Whoa!"} ); + System.out.println( "Hey, what's going on?!?! This shouldn't work" ); + } + catch (NoSuchMethodException e) { + System.out.println( "Good." ); + } + catch (Throwable t) { + System.out.println( "You shouldn't see this!" ); + } + + System.out.println( " Trying to set 'status'" ); + try { + Method m = example.class.getDeclaredMethod("setStatus", new Class[] {Integer.class}); + m.invoke(example.class, new Object[] {new Integer(0)} ); + System.out.println( "Hey, what's going on?!?! This shouldn't work" ); + } + catch (NoSuchMethodException e) { + System.out.println( "Good." ); + } + catch (Throwable t) { + System.out.println( "You shouldn't see this!" ); + } + + System.out.println( "\nI'm going to try and update a structure variable.\n" ); + + example.setPt(example.getPtptr()); + + System.out.println( "The new value is" ); + example.pt_print(); + System.out.println( "You should see the value" + example.Point_print(example.getPtptr()) ); + } +} |