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Diffstat (limited to 'Examples/java/pointer/runme.java')
-rw-r--r-- | Examples/java/pointer/runme.java | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Examples/java/pointer/runme.java b/Examples/java/pointer/runme.java new file mode 100644 index 0000000..f32f980 --- /dev/null +++ b/Examples/java/pointer/runme.java @@ -0,0 +1,55 @@ + +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[]) { + + // First create some objects using the pointer library. + System.out.println("Testing the pointer library"); + SWIGTYPE_p_int a = example.new_intp(); + SWIGTYPE_p_int b = example.new_intp(); + SWIGTYPE_p_int c = example.new_intp(); + example.intp_assign(a,37); + example.intp_assign(b,42); + + // Note that getCPtr() has package access by default + System.out.println(" a =" + Long.toHexString(SWIGTYPE_p_int.getCPtr(a))); + System.out.println(" b =" + Long.toHexString(SWIGTYPE_p_int.getCPtr(b))); + System.out.println(" c =" + Long.toHexString(SWIGTYPE_p_int.getCPtr(c))); + + // Call the add() function with some pointers + example.add(a,b,c); + + // Now get the result + int res = example.intp_value(c); + System.out.println(" 37 + 42 =" + res); + + // Clean up the pointers + example.delete_intp(a); + example.delete_intp(b); + example.delete_intp(c); + + // Now try the typemap library + // Now it is no longer necessary to manufacture pointers. + // Instead we use a single element array which in Java is modifiable. + + System.out.println("Trying the typemap library"); + int[] r = {0}; + example.sub(37,42,r); + System.out.println(" 37 - 42 = " + r[0]); + + // Now try the version with return value + + System.out.println("Testing return value"); + int q = example.divide(42,37,r); + System.out.println(" 42/37 = " + q + " remainder " + r[0]); + } +} |