EXPRESSIONS

Compound Assignment Operators

15.25.2

class RightHandSideThrow extends RuntimeException { }

class IllustrateCompoundArrayAssignment {

static String[] strings = { "Simon", "Garfunkel" };

static double[] doubles = { Math.E, Math.PI };

static String[] stringsThrow() {

throw new ArrayReferenceThrow();

}

static double[] doublesThrow() {

throw new ArrayReferenceThrow();

}

static int indexThrow() { throw new IndexThrow(); }

static String stringThrow() {

throw new RightHandSideThrow();

}

static double doubleThrow() {

throw new RightHandSideThrow();

}

static String name(Object q) {

String sq = q.getClass().getName();

int k = sq.lastIndexOf( . );

return (k < 0) ? sq : sq.substring(k+1);

}

static void testEight(String[] x, double[] z, int j) {

String sx = (x == null) ? "null" : "Strings";

String sz = (z == null) ? "null" : "doubles";

System.out.println();

try {

System.out.print(sx + "[throw]+=throw => ");

x[indexThrow()] += stringThrow();

System.out.println("Okay!");

} catch (Throwable e) { System.out.println(name(e)); }

try {

System.out.print(sz + "[throw]+=throw => ");

z[indexThrow()] += doubleThrow();

System.out.println("Okay!");

} catch (Throwable e) { System.out.println(name(e)); }

try {

System.out.print(sx + "[throw]+=\"heh\" => ");

x[indexThrow()] += "heh";

System.out.println("Okay!");

} catch (Throwable e) { System.out.println(name(e)); }

try {

System.out.print(sz + "[throw]+=12345 => ");

z[indexThrow()] += 12345;

System.out.println("Okay!");

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