{"id":195,"date":"2008-09-24T09:24:00","date_gmt":"2008-09-24T09:24:00","guid":{"rendered":"http:\/\/www.tutego.de\/blog\/javainsel\/?p=195"},"modified":"2008-09-24T09:24:00","modified_gmt":"2008-09-24T09:24:00","slug":"java-tipp-initialisierung-einer-map","status":"publish","type":"post","link":"https:\/\/www.tutego.de\/blog\/javainsel\/2008\/09\/java-tipp-initialisierung-einer-map\/","title":{"rendered":"Java Tipp: Initialisierung einer Map"},"content":{"rendered":"<\/p>\n

Der übliche Weg führt über ein put(), wobei man das unterschiedlich schreiben kann: <\/p>\n

Map<String, String> map = new HashMap<String, String>();
map.put( "name", "chris" );
map.put( "email", "a@b.c" ); <\/p>\n

Oder auch mit einem Exemplarinitialisierer (das ist aber schmutzig in meinen Augen!): <\/p>\n

Map<String, String> map = new HashMap<String, String>() {{
  put( "name", "chris" );
  put( "email", "a@b.c" );
}}; <\/p>\n

Alternative: http:\/\/commons.apache.org\/collections\/api-release\/org\/apache\/commons\/collections\/MapUtils.html#putAll(java.util.Map,%20java.lang.Object[])<\/a>. Die API nennt ein Beispiel: <\/p>\n

Map colorMap = MapUtils.putAll(new HashMap(), new String[][] {
     {"RED", "#FF0000"},
     {"GREEN", "#00FF00"},
     {"BLUE", "#0000FF"}
}); <\/p>\n

Die Apache Common Collections sind aber erst einmal nicht generisch! <\/p>\n

Für http:\/\/google-collections.googlecode.com\/svn\/trunk\/javadoc\/com\/google\/common\/collect\/Maps.html<\/a> ist so was wohl geplant, aber bisher noch nicht implementiert.<\/p>\n","protected":false},"excerpt":{"rendered":"

Der übliche Weg führt über ein put(), wobei man das unterschiedlich schreiben kann: Map<String, String> map = new HashMap<String, String>(); map.put( "name", "chris" ); map.put( "email", "a@b.c" ); Oder auch mit einem Exemplarinitialisierer (das ist aber schmutzig in meinen Augen!): Map<String, String> map = new HashMap<String, String>() {{   put( "name", "chris" );   put( […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-195","post","type-post","status-publish","format-standard","hentry","category-allgemein"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts\/195","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/comments?post=195"}],"version-history":[{"count":0,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/posts\/195\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/media?parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/categories?post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tutego.de\/blog\/javainsel\/wp-json\/wp\/v2\/tags?post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}