java - 如何嵌套 for 循环以打印多维数组？

Question

在我的程序中，我创建了一个数组，该数组现在已从 int 转换为多维字符串数组，employeeNamesA[2][i]我现在想使用字符串生成器，以便可以在一个 JOptionPane.showMessageDialog 中打印所有内容。我在尝试让我的嵌套循环工作时遇到问题。

StringBuilder builder = new StringBuilder (employeeNamesA.length);
    for (int i=0; i<employeeNamesA.length; builder.append(employeeNamesA[][i++]))
        {
        for(int j=0; j<2; builder.append(employeeNamesA[j++][]))
        builder.append("\n");
        }
    JOptionPane.showMessageDialog(null, "Employees with new Salary: " + builder.toString() + "PBI will now be paying this much more in total salary: $" + (totalSalary - totalNewSalary));

Answer 1

你在寻找这样的东西吗？

StringBuilder builder = new StringBuilder (employeeNamesA.length);
    for (int i=0; i<employeeNamesA.length; i++))
        {
        for(int j=0; j<2; j++)
            builder.append(employeeNamesA[i][j]+"\n");
        }
    JOptionPane.showMessageDialog(null, "Employees with new Salary: " + builder.toString() + "PBI will now be paying this much more in total salary: $" + (totalSalary - totalNewSalary));