Several simple call relationships and methods of "Java Foundation"

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1 classLesson4ab2 //The public -decorated method under the same class, A, B, can call each other3 {4      Public voidA ()5     {6B ();//equivalent to this. B ();7     }8      Public voidB ()9     {TenA ();//equivalent to this. A (); One     } A } - classlesson4c - //methods for public modification that exist in different classes C Call B the { -      Public voidC () -     { -Lesson4ab lab=Newlesson4ab (); + lab.b (); -         //the top and bottom two methods are equivalent and can be called +         NewLesson4ab (). B (); A     } at } - classLESSON4DE - //static methods in the same class call each other with non-static methods.  - { -      Public Static voidD ()//modify with static, belong to class member -     { in         //E ();//Error: Unable to reference a non-static method from a static context E () -         //"Popular saying is static does not refer to non-static" to  +         //This . E ();//Error: Unable to reference the non-static variable from the static context this -         //"The popular saying is static and this cannot coexist" the  *         NewLESSON4DE (). E ();//through $         //Public void E () does not have a static decoration, belongs to an object, and can only be invoked with an objectPanax Notoginseng     } -      Public voidE ()//No static modifier, belongs to Object the     { +D ();//equivalent to this. D (); A         //object can invoke a class member the     } + } - classLesson4 $ { $      Public Static voidMain (string[] args) -     { -System.out.println ("May happy!"); the     } -}

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Several simple call relationships and methods of "Java Foundation"