JavaSwitch语句:常量表达式是必需的,但它是常量
public abstract class Foo {
...
public static final int BAR;
public static final int BAZ;
public static final int BAM;
...}public static String lookup(int constant) {
switch (constant) {
case Foo.BAR: return "bar";
case Foo.BAZ: return "baz";
case Foo.BAM: return "bam";
default: return "unknown";
}}constant expression required
Foo.BA_
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