Drei eingegebene Zahlen sollen der Größe nach sortiert werden.

public void jButton1_ActionPerformed(ActionEvent evt) {
    double a = jNumberField1.getDouble();
    double b = jNumberField2.getDouble();
    double c = jNumberField3.getDouble();
    double k = 0;
    double m = 0;
    double g = 0;
 
    if (a<b && a<c) {k = a;}
    if (b<a && b<c) {k = b;}
    if (c<a && c<b) {k = c;}
 
    if (a>b && a>c) {g = a;}
    if (b>a && b>c) {g = b;}
    if (c>a && c>b) {g = c;}
 
    if (a<b && a>c) {m = a;}
    if (b<a && b>c) {m = b;}
    if (c<a && c>b) {m = c;}
 
    jNumberField4.setText(String.valueOf(k));
    jNumberField5.setText(String.valueOf(m));
    jNumberField6.setText(String.valueOf(g)); 
 

von Jona Schneider