| fullrecord |
[{"key": "dc.contributor.author", "value": "Honkanen, Ville-Pekka", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2010-05-28T09:31:49Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2010-05-28T09:31:49Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2010", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/23850", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "\u00a0Honkanen, Juho Ville-Pekka\r\nOhjelmistokehitt\u00e4j\u00e4n keinoja Java-koodin tehostamiseen ja keinojen\r\nhy\u00f6dyllisyys / Ville-Pekka Honkanen\r\nJyv\u00e4skyl\u00e4: Jyv\u00e4skyl\u00e4n yliopisto, 2010.\r\n37 s.\r\nKandidaatintutkielma\r\nT\u00e4ss\u00e4 tutkielmassa k\u00e4yd\u00e4\u00e4n l\u00e4vitse keinoja, joilla voidaan parantaa Java-koodin\r\nsuorituskyky\u00e4. Tutkielma on toteutettu kirjallisuuskatsauksena ja sen tarkoituksena\r\non tutkia perinteisi\u00e4 koodioptimointeja ja selvitet\u00e4\u00e4n onko niist\u00e4\r\nen\u00e4\u00e4 nykyp\u00e4iv\u00e4n\u00e4 hy\u00f6ty\u00e4. Lis\u00e4ksi k\u00e4sitell\u00e4\u00e4n keinoja, joilla todella voi parantaa\r\nohjelman suorituskyky\u00e4 ja miss\u00e4 tilanteissa n\u00e4it\u00e4 voidaan k\u00e4ytt\u00e4\u00e4. L\u00e4pi k\u00e4yd\u00e4\u00e4n\r\nmy\u00f6s koodaamistapoja, joita tulisi v\u00e4ltt\u00e4\u00e4, esimerkiksi lopetusmetodien\r\nk\u00e4ytt\u00f6.\r\nTutkielmassa selvi\u00e4\u00e4, ett\u00e4 useat aiemmin j\u00e4rkevin\u00e4 pidetyt optimoinnit ovat nykyisin\r\nuseissa tilanteissa suhteellisen turhia ja niit\u00e4 tulisi jopa v\u00e4ltt\u00e4\u00e4. T\u00e4llaisina\r\nvoi pit\u00e4\u00e4 ainakin final-m\u00e4\u00e4reen k\u00e4ytt\u00f6\u00e4 luokkiin tai metodeihin liitettyn\u00e4.\r\nToisaalta jotkin aiemminkin hyvin toimineet koodin tehostuskeinot ovat nykyisinkin\r\ntoimivia. T\u00e4llaisia ovat erityisesti merkkijonojen k\u00e4sittelyyn sopiva\r\nStringBuilder-luokka ja olioiden kierr\u00e4tt\u00e4minen. Toimivissakin tehostuskeinoissa\r\non huomioitava, ett\u00e4 ne sopivat vain tiettyihin tapauksiin.\r\nLopputuloksena koko koodintehostamisesta on se, ett\u00e4 koodia ei tulisi tehd\u00e4\r\nvain suorituskyvyn vuoksi, vaan tulisi pyrki\u00e4 tekem\u00e4\u00e4n hyv\u00e4\u00e4 koodia ja j\u00e4tt\u00e4\u00e4\r\noptimoiminen JVM:lle. T\u00e4ll\u00f6in usein my\u00f6s suorituskyky seuraa mukana. Jos\r\nkuitenkaan suorituskyky ei riit\u00e4, voidaan mietti\u00e4, mit\u00e4 tulisi koodissa optimoida.\r\n\r\nTutkielman ohjaaja:\r\nPertti Hirvonen\r\nJyv\u00e4skyl\u00e4n Yliopisto, Tietojenk\u00e4sittelytieteiden laitos\r\nTutkielman tarkastaja:\r\nJorma Kypp\u00f6\r\nJyv\u00e4skyl\u00e4n Yliopisto, Tietojenk\u00e4sittelytieteiden laitos\u00a0", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Seija Paananen (sepaanan@jyu.fi) on 2010-05-28T09:31:48Z\nNo. of bitstreams: 2\nVille-Pekka Honkanen.pdf: 229889 bytes, checksum: fa7dac612da766011b9e9971fb819869 (MD5)\nlicense.xml: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2010-05-28T09:31:49Z (GMT). No. of bitstreams: 2\nVille-Pekka Honkanen.pdf: 229889 bytes, checksum: fa7dac612da766011b9e9971fb819869 (MD5)\nlicense.xml: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "object pooling", "language": "en", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "interning", "language": "en", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "koodin tehostaminen", "language": "en", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "optimointi", "language": "en", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "java", "language": "en", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Ohjelmistokehitt\u00e4j\u00e4n keinoja Java-koodin tehostamiseen ja keinojen hy\u00f6dyllisyys", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "bachelor thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201005281965", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Kandidaatintutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Bachelor's thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietoj\u00e4rjestelm\u00e4tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Information Systems Science", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_7a1f", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "bachelorThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
|