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Java example source code file (T4880220.java)

This example Java source code file (T4880220.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

class, t4880220

The T4880220.java Java example source code

/*
 * @test /nodynamiccopyright/
 * @bug 4880220
 * @summary Add a warning when accessing a static method via an reference
 *
 * @compile/ref=T4880220.empty.out                                                   T4880220.java
 * @compile/ref=T4880220.warn.out       -XDrawDiagnostics         -Xlint:static      T4880220.java
 * @compile/ref=T4880220.warn.out       -XDrawDiagnostics         -Xlint:all         T4880220.java
 * @compile/ref=T4880220.empty.out      -XDrawDiagnostics         -Xlint:all,-static T4880220.java
 * @compile/ref=T4880220.error.out/fail -XDrawDiagnostics -Werror -Xlint:all         T4880220.java
 */

public class T4880220 {
    void m1() {
        int good_1 = C.m();
        int good_2 = C.f;
        int good_3 = C.x;

        C c = new C();
        int bad_inst_1 = c.m();
        int bad_inst_2 = c.f;
        int bad_inst_3 = c.x;

        int bad_expr_1 = c().m();
        int bad_expr_2 = c().f;
        int bad_expr_3 = c().x;
    }

    void m2() {
        Class<?> good_1 = C.class;
        Class<?> good_2 = C[].class;
    }

    C c() {
        return new C();
    }

    static class C {
        static int m() { return 0; }
        static int f;
        static final int x = 3;
    }
}

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