Add Java API for non-streaming ASR (#807)

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

@@ -0,0 +1,71 @@
+// Copyright 2024 Xiaomi Corporation
+package com.k2fsa.sherpa.onnx;
+
+public class OfflineRecognizerConfig {
+    private final FeatureConfig featConfig;
+    private final OfflineModelConfig modelConfig;
+    private final String decodingMethod;
+    private final int maxActivePaths;
+    private final String hotwordsFile;
+    private final float hotwordsScore;
+
+    private OfflineRecognizerConfig(Builder builder) {
+        this.featConfig = builder.featConfig;
+        this.modelConfig = builder.modelConfig;
+        this.decodingMethod = builder.decodingMethod;
+        this.maxActivePaths = builder.maxActivePaths;
+        this.hotwordsFile = builder.hotwordsFile;
+        this.hotwordsScore = builder.hotwordsScore;
+    }
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    public OfflineModelConfig getModelConfig() {
+        return modelConfig;
+    }
+
+    public static class Builder {
+        private FeatureConfig featConfig = FeatureConfig.builder().build();
+        private OfflineModelConfig modelConfig = OfflineModelConfig.builder().build();
+        private String decodingMethod = "greedy_search";
+        private int maxActivePaths = 4;
+        private String hotwordsFile = "";
+        private float hotwordsScore = 1.5f;
+
+        public OfflineRecognizerConfig build() {
+            return new OfflineRecognizerConfig(this);
+        }
+
+        public Builder setFeatureConfig(FeatureConfig featConfig) {
+            this.featConfig = featConfig;
+            return this;
+        }
+
+        public Builder setOfflineModelConfig(OfflineModelConfig modelConfig) {
+            this.modelConfig = modelConfig;
+            return this;
+        }
+
+        public Builder setDecodingMethod(String decodingMethod) {
+            this.decodingMethod = decodingMethod;
+            return this;
+        }
+
+        public Builder setMaxActivePaths(int maxActivePaths) {
+            this.maxActivePaths = maxActivePaths;
+            return this;
+        }
+
+        public Builder setHotwordsFile(String hotwordsFile) {
+            this.hotwordsFile = hotwordsFile;
+            return this;
+        }
+
+        public Builder setHotwordsScore(float hotwordsScore) {
+            this.hotwordsScore = hotwordsScore;
+            return this;
+        }
+    }
+}