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  1. import java.util.Objects;
  2.  
  3. class Ideone {
  4.  
  5.     public static void main (String[] args) {
  6.         Loop.from(0).to(10).execute(() -> {
  7.             System.out.println("Hello World!");
  8.         });
  9.     }
  10. }
  11.  
  12. class Loop {
  13.     private final int from;
  14.     private final int to;
  15.  
  16.     private Loop(Builder builder) {
  17.         this.from = builder.from();
  18.         this.to = builder.to();
  19.     }
  20.  
  21.     public static LoopFromSetBuilder from(int from) {
  22.         return new Builder().from(from);
  23.     }
  24.  
  25.     public static LoopToSetBuilder to(int to) {
  26.         return new Builder().to(to);
  27.     }
  28.  
  29.     public void execute(Runnable executable) {
  30.         for (int i = from; i < to; i++) {
  31.             executable.run();
  32.         }
  33.     }
  34.  
  35.     public static class Builder  implements LoopFromSetBuilder, LoopToSetBuilder, LoopAllSetBuilder {
  36.         private int from = 0;
  37.         private Integer to = null;
  38.  
  39.         private Builder() {}
  40.  
  41.         public Builder from(int from) {
  42.             this.from = from;
  43.             return this;
  44.         }
  45.  
  46.         private int from() {
  47.             return from;
  48.         }
  49.  
  50.         public Builder to(int to) {
  51.             this.to = to;
  52.             return this;
  53.         }
  54.  
  55.         private int to() {
  56.             return to;
  57.         }
  58.  
  59.         public void execute(Runnable runnable) {
  60.             Objects.requireNonNull(runnable);
  61.             new Loop(this).execute(runnable);
  62.         }
  63.     }
  64.  
  65.     interface LoopFromSetBuilder {
  66.         LoopAllSetBuilder to(int to);
  67.     }
  68.  
  69.     interface LoopToSetBuilder {
  70.         LoopAllSetBuilder from(int from);
  71.     }
  72.  
  73.     interface LoopAllSetBuilder {
  74.         void execute(Runnable runnable);
  75.     }
  76. }
Success #stdin #stdout 0.06s 33680KB
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Standard input is empty
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Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
Hello World!
https://ideone.com/x0B4w9
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

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