如何删除字符串值两边的方括号 [英] How to remove square brackets on either side of string value

问题描述

当我在表格上选择一行时，它将以字符串形式打印出所选项目，如图所示.如何从弦的两边移除方括号.

When I choose a row on the table it prints out the selected item in a string as shown. How do I remove the square brackets from either side of the string.

下面是我的代码，用数据填充TextFields.您可以看到它已成功填充，但是带有[].

Below is my code to populate TextFields with the data. You can see it populates successfully but with the [].

表和输出

tableView.getSelectionModel().selectedItemProperty().addListener((v, oldValue, newValue) -> {
    String input = newValue.toString();
    String[] str_array = input.split(", ");
    String code = str_array[0]; 
    String name = str_array[1]; 
    String lecturer = str_array[2];
    String year = str_array[3];
    String semester = str_array[4];

    codeInput.setText(code);
    nameInput.setText(name);
    lectureInput.setText(lecturer);
    yearInput.setText(year);
    semesterInput.setText(semester);
    System.out.println(input);
});

推荐答案

您newValue应该是Object.假设它是SchoolInfo的对象，其变量为String code，String name，String lecturer，int year和int semester.您的Object应该具有Getters和Setters.您应该做类似的事情.

You newValue should be an Object. Let's say it's an object of SchoolInfo with variables of String code, String name, String lecturer, int year, and int semester. Your Object should have Getters and Setters. You should do something like.

警告:其他一些答案可能会完成任务，但不是很好的主意.您尝试处理此数据的方式是个坏主意.

tableView.getSelectionModel().selectedItemProperty().addListener((v, oldValue, newValue) -> {
    SchoolInfo tempSchoolInfo = (SchoolInfo)newValue;

    String code = tempSchoolInfo.getCode(); 
    String name = tempSchoolInfo .getName(); 
    String lecturer = tempSchoolInfo.getLecturer;
    int year = tempSchoolInfo.getYear();
    int semester = tempSchoolInfo.getSemester();

    codeInput.setText(code);
    nameInput.setText(name);
    lectureInput.setText(lecturer);
    yearInput.setText(Integer.toString(year));
    semesterInput.setText(Integer.toString(semester));
    System.out.println(input);
});

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