Java swing GUI表单/ jFrame，平均，最大和最小按钮

Question

用户提示在表单中输入6个整数（文本字段）。到目前为止，我已经完成了平均值。如何为最大和最小的数字创建代码？

private void averageButtonActionPerformed(java.awt.event.ActionEvent evt) {                                               

    int number1 = 0;
    int number2 = 0;
    int number3 = 0;
    int number4 = 0;
    int number5 = 0;
    int number6 = 0; 

    try {
        number1 = Integer.parseInt(
        this.oneTextField1.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad first number", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    try {
        number2 = Integer.parseInt(
        this.twoTextField2.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad number 2", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    try {
        number3 = Integer.parseInt(
        this.threeTextField3.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad number 3", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    try {
        number4 = Integer.parseInt(
        this.fourTextField4.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad number 4", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    try {
        number5 = Integer.parseInt(
        this.fiveTextField5.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad number 5", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    try {
        number6 = Integer.parseInt(
        this.sixTextField6.getText());
    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, "Bad number 6", "Error",
        JOptionPane.ERROR_MESSAGE);
    }

    int answer = (number1 + number2+number3+number4+number5+number6)/6;
    this.answerLabel1.setText("The answer is: " +answer);

Answer 1

int answer = (number1);
    this.answerLabel1.setText("The answer is: " +answer);   
    if (number1<number2)
            answer =(number2);

   else if (number2 < number3)
                {
                 answer=number3;
           }
    this.answerLabel1.setText("The answer is: " +answer);