JAVA

string array to arraylist android

String [] strings = new String [] {"1", "2" };
List<String> stringList = new ArrayList<String>(Arrays.asList(strings)); //new ArrayList is only needed if you absolutely need an ArrayList

string array to arraylist

String [] strings = new String [] {"1", "2" };
List<String> stringList = new ArrayList<String>(Arrays.asList(strings)); //new ArrayList is only needed if you absolutely need an ArrayList

java arraylist to string

ArrayList<String> al = new ArrayList<String>();
      al.add("Hello");
      al.add("Wor");
      al.add("ld");
      StringBuffer sb = new StringBuffer();
      
      for (String s : al) {
         sb.append(s);
         sb.append(" ");
      }
      String str = sb.toString();
      System.out.println(str);//"Hello wor ld" 

java string array to arraylist

new ArrayList( Arrays.asList( new String[]{"abc", "def"} ) );

java from string to arraylist

import com.google.gson.Gson;
import com.google.gson.annotations.SerializedName;
import com.google.gson.reflect.TypeToken;
import java.util.List;

class T {
	@SerializedName("name")
    private String name;
    @SerializedName("age")
    private int age;
    // constructor ...
  	// getters & setters ... 
}

String data = "[{"name":"Test1", "age":22}, {"name":"Test2", "age":32}]";
List<T> holder = new Gson().fromJson(data, new TypeToken<List<T>>(){}.getType() );