fallthrough.java

来自「是一款用JAVA 编写的编译器 具有很强的编译功能」· Java 代码 · 共 63 行

/**
 * @test  /nodynamiccopyright/
 * @bug 4986256
 * @compile/ref=FallThrough.noLint.out -XDstdout                             -XDrawDiagnostics FallThrough.java
 * @compile/ref=FallThrough.lintAll.out -XDstdout         -Xlint:all,-path   -XDrawDiagnostics FallThrough.java
 * @compile/ref=FallThrough.lintFallThrough.out -XDstdout -Xlint:fallthrough -XDrawDiagnostics FallThrough.java
 */

// control: this class should generate a warning
class FallThrough
{
    int m1(int i) {
	switch (i) {
	case 1: i++; case 2: i++;
	}
	return i;
    }
}

// tests: the warnings that would otherwise be generated should all be suppressed
@SuppressWarnings("fallthrough")
class FallThrough1
{
    int m1(int i) {
	switch (i) {
	case 1: i++; case 2: i++;
	}
	return i;
    }
}

class FallThrough2
{
    @SuppressWarnings("fallthrough")
    class Bar {
	int m1(int i) {
	    switch (i) {
	    case 1: i++; case 2: i++;
	    }
	    return i;
	}
    }

    @SuppressWarnings("fallthrough")
    void m2(int i) {
	switch (i) {
	case 1: i++; case 2: i++;
	}
    }


    @SuppressWarnings("fallthrough")
    static int x = new FallThrough2() {
	    int m1(int i) {
		switch (i) {
		case 1: i++; case 2: i++;
		}
		return i;
	    }
	}.m1(0);
		
}