Refactor Java API (#806)

sherpa-onnx/java-api/src/com/k2fsa/sherpa/onnx/EndpointRule.java

@@ -1,19 +1,21 @@
-/*
- * // Copyright 2022-2023 by zhaoming
- */
-
+// Copyright 2022-2023 by zhaoming
+// Copyright 2024 Xiaomi Corporation
 package com.k2fsa.sherpa.onnx;
 
 public class EndpointRule {
+
     private final boolean mustContainNonSilence;
     private final float minTrailingSilence;
     private final float minUtteranceLength;
 
-    public EndpointRule(
-            boolean mustContainNonSilence, float minTrailingSilence, float minUtteranceLength) {
-        this.mustContainNonSilence = mustContainNonSilence;
-        this.minTrailingSilence = minTrailingSilence;
-        this.minUtteranceLength = minUtteranceLength;
+    private EndpointRule(Builder builder) {
+        this.mustContainNonSilence = builder.mustContainNonSilence;
+        this.minTrailingSilence = builder.minTrailingSilence;
+        this.minUtteranceLength = builder.minUtteranceLength;
+    }
+
+    public static Builder builder() {
+        return new Builder();
     }
 
     public float getMinTrailingSilence() {
@@ -27,4 +29,29 @@ public class EndpointRule {
     public boolean getMustContainNonSilence() {
         return mustContainNonSilence;
     }
-}
+
+    public static class Builder {
+        private boolean mustContainNonSilence = false;
+        private float minTrailingSilence = 0;
+        private float minUtteranceLength = 0;
+
+        public EndpointRule build() {
+            return new EndpointRule(this);
+        }
+
+        public Builder setMustContainNonSilence(boolean mustContainNonSilence) {
+            this.mustContainNonSilence = mustContainNonSilence;
+            return this;
+        }
+
+        public Builder setMinTrailingSilence(float minTrailingSilence) {
+            this.minTrailingSilence = minTrailingSilence;
+            return this;
+        }
+
+        public Builder setMinUtteranceLength(float minUtteranceLength) {
+            this.minUtteranceLength = minUtteranceLength;
+            return this;
+        }
+    }
+}