Практическое использование multiple bounds generic в Java

Сейчас всё намного приятнее:

• лямды, стримы (Java8)
• injection (GIN, Dagger 2)
• REST API (RestyGWT)
• доступ к любой JS библиотеке путём написания простйшего интефейса (JS Interop). При прямых руках и еще небольшом усиилии из Java даже проще.

Например JavaScript

var builder = new StarWebPrintBuilder();
var request = '';
request += builder.createInitializationElement();
request += builder.createTextElement({characterspace:2});
request += builder.createAlignmentElement({position:'right'});
request += builder.createLogoElement({number:1});
request += builder.createTextElement({data:'TEL 9999-99-9999\n'});
request += builder.createAlignmentElement({position:'left'});
request += builder.createTextElement({data:'\n'});
request += builder.createTextElement({data:'Apple                $20.00\n'});
request += builder.createTextElement({emphasis:true});
request += builder.createTextElement({width:2, data:'Total'});
request += builder.createTextElement({width:1, data:'   '});
request += builder.createTextElement({width:2, data:'$210.00\n'});
request += builder.createTextElement({width:1});
request += builder.createTextElement({emphasis:false});
request += builder.createTextElement({data:'\n'});
request += builder.createCutPaperElement({feed:true});

Тот же код из Java (JS Interop)

StarWebPrintBuilder builder = new StarWebPrintBuilder();
String request = new StringBuilder()
.append(builder.createInitializationElement(new Iep()))
.append(builder.createTextElement(new Tep() {{ characterspace = 2; }}))
.append(builder.createAlignmentElement(new Aep() {{ position = "right"; }}))
.append(builder.createLogoElement(new Lep() {{ number = 1;}}))
.append(builder.createTextElement(new Tep() {{ data = "TEL 9999-99-9999\n"; }}))
.append(builder.createAlignmentElement(new Aep() {{ position = "left"; }}))
.append(builder.createTextElement(new Tep() {{ data = "\n"; }}))
.append(builder.createTextElement(new Tep() {{ data = "Apple          $20.00\n"; }}))
.append(builder.createTextElement(new Tep() {{ emphasis = true; }}))
.append(builder.createTextElement(new Tep() {{ width = 2; data = "Total"; }}))
.append(builder.createTextElement(new Tep() {{ width = 1; data = "   "; }}))
.append(builder.createTextElement(new Tep() {{ width = 2; data = "$210.00\n"; }}))
.append(builder.createTextElement(new Tep() {{ width = 1; }}))
.append(builder.createTextElement(new Tep() {{ emphasis = false; }}))
.append(builder.createTextElement(new Tep() {{ data = "\n"; }}))
.append(builder.createCutPaperElement(new Cpep() {{ feed = true; }}))
 .toString();

Тот же код из Java (JS Interop + Custom builder on Java)

String request = new GwtPrintBuilder()
     .init()
     .text(characterSpace(2))
     .align(right)
     .logo(number(1))
     .text("TEL 9999-99-9999")
     .align(left)
     .text(line())
     .text("Apple", "$20.00", lineLengt)
     .text(emphasis(true))
     .text("Total", "210.00", lineLengt, 2)
     .text(emphasis(false))
     .text(line())
     .cut(feed(true))
     .build();