Question

在Joptionpane中，我的角色在对话框消息中逐一显示。我需要它们来形成一个单词，例如：如果我使用Sytem.out.println（c）它将在一行中显示它们。我想在joptionpane中一起显示它们

for (int i = 0; i < encrypt.length(); i++) {
        char c = encrypt.charAt(i);
        if (Character.isLetter(c)) {
            c -= shift;
            if(c < 'A'){
                c = (char) (((int) c + (int) ('A')) % 26 + (int) ('A'));
            }else{
                c = (char) (((int) c - (int) ('A')) % 26 + (int) ('A'));
            }

                            JOptionPane.showMessageDialog(null, c);
        }

    }

Answer 1

String result = "";
for (int i = 0; i < encrypt.length(); i++) {
        char c = encrypt.charAt(i);
        if (Character.isLetter(c)) {
            c -= shift;
            if(c < 'A'){
                c = (char) (((int) c + (int) ('A')) % 26 + (int) ('A'));
            }else{
                c = (char) (((int) c - (int) ('A')) % 26 + (int) ('A'));
            }


        }
result += String.valueOf(c);
    }
JOptionPane.showMessageDialog(null, result);

将字符连接到字符串 - java

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