Java API for speaker diarization (#1416)

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

@@ -0,0 +1,44 @@
+// Copyright 2024 Xiaomi Corporation
+
+package com.k2fsa.sherpa.onnx;
+
+public class FastClusteringConfig {
+    private final int numClusters;
+    private final float threshold;
+
+    private FastClusteringConfig(Builder builder) {
+        this.numClusters = builder.numClusters;
+        this.threshold = builder.threshold;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public int getNumClusters() {
+        return numClusters;
+    }
+
+    public float getThreshold() {
+        return threshold;
+    }
+
+    public static class Builder {
+        private int numClusters = -1;
+        private float threshold = 0.5f;
+
+        public FastClusteringConfig build() {
+            return new FastClusteringConfig(this);
+        }
+
+        public Builder setNumClusters(int numClusters) {
+            this.numClusters = numClusters;
+            return this;
+        }
+
+        public Builder setThreshold(float threshold) {
+            this.threshold = threshold;
+            return this;
+        }
+    }
+}