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extra-class"},[s("pre",{pre:!0,attrs:{class:"language-java"}},[s("code",[s("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("BufferedImage")]),t._v(" image "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("new")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("BufferedImage")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("256")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("256")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("BufferedImage")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("TYPE_INT_ARGB"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token 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"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n    "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("int")]),t._v(" j "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("0")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" j "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("<")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("256")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" j"),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("++")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("{")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("int")]),t._v(" alpha "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("255")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//don't forget this, or use BufferedImage.TYPE_INT_RGB instead")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("int")]),t._v(" red "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" i"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//or any formula you like")]),t._v("\n        "),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("int")]),t._v(" green "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" j"),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token 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"),s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("new")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token class-name"}},[t._v("File")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),s("span",{pre:!0,attrs:{class:"token string"}},[t._v('"computed.png"')]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v("\n\n")])])]),s("p",[t._v("Output:")]),t._v(" "),s("p",[s("a",{attrs:{href:"https://i.stack.imgur.com/AogvX.png",target:"_blank",rel:"noopener noreferrer"}},[s("img",{attrs:{src:"https://i.stack.imgur.com/AogvX.png",alt:"computed image"}}),s("OutboundLink")],1)]),t._v(" "),s("h2",{attrs:{id:"specifying-image-rendering-quality"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#specifying-image-rendering-quality"}},[t._v("#")]),t._v(" Specifying image rendering quality")]),t._v(" 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"),s("a",{attrs:{href:"http://i.stack.imgur.com/sqHhS.png",target:"_blank",rel:"noopener noreferrer"}},[s("img",{attrs:{src:"http://i.stack.imgur.com/sqHhS.png",alt:"high-quality render"}}),s("OutboundLink")],1)]),t._v(" "),s("h2",{attrs:{id:"creating-an-image-with-bufferedimage-class"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#creating-an-image-with-bufferedimage-class"}},[t._v("#")]),t._v(" Creating an image with BufferedImage class")]),t._v(" "),s("div",{staticClass:"language-java extra-class"},[s("pre",{pre:!0,attrs:{class:"language-java"}},[s("code",[s("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("int")]),t._v(" width "),s("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token number"}},[t._v("256")]),s("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" "),s("span",{pre:!0,attrs:{class:"token comment"}},[t._v("//in pixels")]),t._v("\n"),s("span",{pre:!0,attrs:{class:"token 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= new BufferedImage(w, h, BufferedImage.TRANSLUCENT);\n\n    //Create a device-independant object to draw the resized image\n    Graphics2D g2 = resizedImg.createGraphics();\n\n    //This could be changed, Cf. http://stackoverflow.com/documentation/java/5482/creating-images-programmatically/19498/specifying-image-rendering-quality\n    g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);\n\n    //Finally draw the source image in the Graphics2D with the desired size.\n    g2.drawImage(srcImg, 0, 0, w, h, null);\n\n    //Disposes of this graphics context and releases any system resources that it is using\n    g2.dispose();\n\n    //Return the image used to create the Graphics2D \n    return resizedImg;\n}\n\n")])])]),s("h4",{attrs:{id:"remarks"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#remarks"}},[t._v("#")]),t._v(" Remarks")]),t._v(" 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