38 lines
822 B
Java
38 lines
822 B
Java
// functional/RunnableMethodReference.java
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// ©2016 MindView LLC: see Copyright.txt
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// Demonstrates method references
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class External {
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static void go() { System.out.println("External.go()"); }
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}
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public class RunnableMethodReference {
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Runnable robject, rstatic, rexstatic;
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void f() { System.out.println("f()"); }
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static void g() { System.out.println("g()"); }
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public void assign() {
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robject = this::f;
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rstatic = RunnableMethodReference::g;
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rexstatic = External::go;
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}
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public void call() {
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robject.run();
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rstatic.run();
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rexstatic.run();
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}
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public static void main(String[] args) {
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RunnableMethodReference rmr =
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new RunnableMethodReference();
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rmr.assign();
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rmr.call();
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rmr.robject = rmr::f;
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rmr.robject.run();
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}
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}
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/* Output:
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f()
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g()
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External.go()
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f()
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*/
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