If you're declaring a Map which will contain some constant values, you can add necessary data to this Map inline:
Map<String, String> map = new HashMap<String, String>() {{
put("1", "value 1");
put("2", "value 2");
put("3", "value 3");
}};
Map<String, String> map = new HashMap<String, String>() {{
put("1", "value 1");
put("2", "value 2");
put("3", "value 3");
}};
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