HashMap找最大值对应的哪一个键java

public static String getProcessCdByName(HashMap processMap){//我找最大值对应的哪一个键
		int max=0;
		for (Integer in : processMap.values()) {
			System.err.println(in);
			max=Math.max(max, in);
		}
		
		String result = null;
		Set> set = processMap.entrySet();
		for(Map.Entry entry : set){
			if(entry.getValue()==max){
				result = entry.getKey();
				break;
			}
		}
		
		return result;
	}

java文件读入代码

File file = new File("/root/info.txt"); 
			
			
            BufferedReader br = new BufferedReader(new FileReader(file));
            String s;
            String[] column = new String[2];
            column[0] = "level";
            column[1] = "class";
            int i = 0;
            while ((s = br.readLine()) != null) {
            	String line[] = s.split(" ");
            	
            	try {
                你的操作============
        			
            	} catch (Exception e) {
        			e.printStackTrace();
        		}
            }